Template:ID-Bacterial meningitis
- Bacterial meningitis[1]
- Empiric antimicrobial therapy based on specific predisposing factors
- Age
- Age < 1 month
- Common causative pathogens: Streptococcus agalactiae, Escherichia coli, Listeria monocytogenes, Klebsiella species
- Preferred regimen: Ampicillin 12 g/day IV q4h AND (Cefotaxime 8–12 g/day q4–6h OR Amikacin 15 mg/kg/day IV q8h OR Gentamicin 5 mg/kg/day IV q8h OR Tobramycin 5 mg/kg/day IV q8h)
- Age 1–23 months
- Common causative pathogens: Streptococcus pneumoniae, Neisseria meningitidis, S. agalactiae, Haemophilus influenzae, E. coli
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h)
- Age 2–50 years
- Common causative pathogens: N . meningitidis, S. pneumoniae
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h)
- Age > 50 years
- Common causative pathogens: S. pneumoniae, N. meningitidis, L. monocytogenes, aerobic Gram-negative bacilli
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND Ampicillin 12 g/day IV q4h AND (Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h)
- Head trauma
- Basilar skull fracture
- Common causative pathogens: S. pneumoniae, H. influenzae, group A β-hemolytic streptococci
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h)
- Penetrating trauma
- Common causative pathogens: Staphylococcus aureus, coagulase-negative staphylococci (especially Staphylococcus epidermidis), aerobic Gram-negative bacilli (including Pseudomonas aeruginosa)
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Cefepime 6 g/day IV q8h OR Ceftazidime 6 g/day IV q8h OR Meropenem 6 g/day IV q8h)
- Postneurosurgery
- Common causative pathogens: Aerobic Gram-negative bacilli (including P. aeruginosa), S. aureus, coagulase-negative staphylococci (especially S. epidermidis)
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Cefepime 6 g/day IV q8h OR Ceftazidime 6 g/day IV q8h OR Meropenem 6 g/day IV q8h)
- CSF shunt
- Common causative pathogens: Coagulase-negative staphylococci (especially S. epidermidis), S. aureus, aerobic Gram-negative bacilli (including P. aeruginosa), Propionibacterium acnes
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Cefepime 6 g/day IV q8h OR Ceftazidime 6 g/day IV q8h OR Meropenem 6 g/day IV q8h)
- CSF Gram stain-directed antimicrobial therapy
- Gram positive, lancet-shaped diplococci suggestive of Streptococcus pneumoniae
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h)
- Alternative regimen: Meropenem 6 g/day IV q8h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h
- Gram negative diplococci suggestive of Neisseria meningitidis
- Preferred regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Alternative regimen: Penicillin G 24 MU/day IV q4h OR Ampicillin 12 g/day IV q4h OR Chloramphenicol 4–6 g/day IV q6h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h OR Aztreonam 6–8 g/day IV q6–8h
- Gram positive, short bacilli suggestive of Listeria monocytogenes
- Preferred regimen: (Ampicillin 12 g/day IV q4h OR Penicillin G 24 MU/day IV q4h) ± (Amikacin 15 mg/kg/day IV q8h OR Gentamicin 5 mg/kg/day IV q8h OR Tobramycin 5 mg/kg/day IV q8h)
- Alternative regimen: Trimethoprim-Sulfamethoxazole 10–20 mg/kg/day q6–12h OR Meropenem 6 g/day IV q8h
- Gram positive cocci in short chains suggestive of Streptococcus agalactiae
- Preferred regimen: (Ampicillin 12 g/day IV q4h OR Penicillin G 24 MU/day IV q4h) ± (Amikacin 15 mg/kg/day IV q8h OR Gentamicin 5 mg/kg/day IV q8h OR Tobramycin 5 mg/kg/day IV q8h)
- Alternative regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Gram negative coccobacilli suggestive of Haemophilus influenzae
- Preferred regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Alternative regimen: Chloramphenicol 4–6 g/day IV q6h OR Cefepime 6 g/day IV q8h OR Meropenem 6 g/day IV q8h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h
- Gram negative bacilli suggestive of Escherichia coli
- Preferred regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Alternative regimen: Cefepime 6 g/day IV q8h OR Meropenem 6 g/day IV q8h OR Aztreonam 6–8 g/day IV q6–8h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h OR Trimethoprim-Sulfamethoxazole 10–20 mg/kg/day q6–12h
- Pathogen-directed antimicrobial therapy
- Acinetobacter baumannii
- Preferred regimen: Meropenem 2 g IV q8h
- Alternative regimen: Colistin 1.25 mg/kg IV q6—12h OR Polymyxin B 0.75—1.25 mg/kg IV q12h
- Enterococcus species
- Ampicillin susceptible
- Preferred regimen: Ampicillin 12 g/day IV q4h AND Gentamicin 5 mg/kg/day IV q8h
- Ampicillin resistant
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND Gentamicin 5 mg/kg/day IV q8h
- Ampicillin and vancomycin resistant
- Preferred regimen: Linezolid 600 mg IV q12h
- Escherichia coli and other Enterobacteriaceae
- Preferred regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Alternative regimen: Aztreonam 6–8 g/day IV q6–8h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h OR Meropenem 6 g/day IV q8h OR Trimethoprim-Sulfamethoxazole 10–20 mg/kg/day q6–12h OR Ampicillin 12 g/day IV q4h
- Haemophilus influenzae
- β-Lactamase negative
- Preferred regimen: Ampicillin 12 g/day IV q4h
- Alternative regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h OR Cefepime 6 g/day IV q8h OR Chloramphenicol 4–6 g/day IV q6h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h
- β-Lactamase positive
- Preferred regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Alternative regimen: Cefepime 6 g/day IV q8h OR Chloramphenicol 4–6 g/day IV q6h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h
- Listeria monocytogenes
- Preferred regimen: Ampicillin 12 g/day IV q4h OR Penicillin G 24 MU/day IV q4h
- Alternative regimen: Trimethoprim-Sulfamethoxazole 10–20 mg/kg/day q6–12h OR Meropenem 6 g/day IV q8h
- Mycobacterium tuberculosis
-
- Intensive phase (adult)
- Preferred regimen: Isoniazid 5 mg/kg (max: 300 mg) for 2 months AND Rifampin 10 mg/kg (max: 600 mg) for 2 months AND Pyrazinamide 15–30 mg/kg (max: 2 g) for 2 months AND Ethambutol 15–20 mg/kg (max: 1 g) for 2 months
-
- Intensive phase (pediatric)
- Preferred regimen: Isoniazid 10–15 mg/kg (max: 300 mg) for 2 months AND Rifampin 10–20 mg/kg (max: 600 mg) for 2 months AND Pyrazinamide 15–30 mg/kg (max: 2 g) for 2 months AND Ethambutol 15–20 mg/kg (max: 1 g) for 2 months
- Continuation phase (pediatric)
- Preferred regimen: Isoniazid 10–15 mg/kg (max: 300 mg) for 7–10 months AND Rifampin 10–20 mg/kg (max: 600 mg) for 7–10 months
- Note (1): World Health Organization guidelines recommend that Ethambutol should be replaced by Streptomycin in tuberculous meningitis.[6] Streptomycin is contraindicated in pregnancy.
- Note (2): A 9– to 12–month course of treatment is recommended for tuberculous meningitis.[7][8]
- Note (3): Adjuvant Dexamethasone 0.3–0.4 mg/kg/day (max: 24 mg) is recommended unless drug resistance is suspected.[9][10]
- Note (4): Liaise with microbiology laboratory about genotype testing for drug resistance if there is high risk for MDR-TB.[11]
- Tuberculous meningitis caused by Mycobacterium tuberculosis resistant to isoniazid or rifampin
- Isoniazid monoresistance[12]
- Substitute Fluoroquinolones for Isoniazid in intensive phase regimen.
- Continue treatment with Rifampin, Pyrazinamide, and Fluoroquinolone for 12 months.
- Rifampin monoresistance[13]
- Substitute Fluoroquinolones for Rifampin in intensive phase regimen.
- Continue treatment with Isoniazid, Pyrazinamide, and Fluoroquinolone for 18 months.
- MDR-TB (resistant to Isoniazid and Rifampin)[14]
- MDR tuberculosis therapy should be considered if there is a history of prior tuberculosis treatment, contact with a patient with MDR tuberculosis, or a poor clinical response to first-line TB therapy within 2 weeks despite a firm diagnosis and an adequate adherence to treatment.
- Second-line agents such as Aminoglycosides penetrate the BBB only in the presence of inflamed meninges, and Fluoroquinolones, while able to penetrate into the CNS, have lower CSF levels than in the serum or brain parenchyma.
- Consult infectious disease specialist.
- XDR-TB (resistant to Isoniazid, Rifampin, Fluoroquinolones, and either Capreomycin, Kanamycin, or Amikacin)[15]
- Consider Ethionamide or Cycloserine to build the treatment regimen.
- Consult infectious disease specialist.
- Neisseria meningitidis
- Penicillin MIC < 0.1 μg/mL
- Preferred regimen: Penicillin G 24 MU/day IV q4h OR Ampicillin 12 g/day IV q4h
- Alternative regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h OR Chloramphenicol 4–6 g/day IV q6h
- Penicillin MIC 0.1–1.0 μg/mL
- Preferred regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Alternative regimen: Chloramphenicol 4–6 g/day IV q6h OR Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h OR Meropenem 6 g/day IV q8h
- Pseudomonas aeruginosa
- Preferred regimen: Cefepime 6 g/day IV q8h OR Ceftazidime 6 g/day IV q8h
- Alternative regimen: Aztreonam 6–8 g/day IV q6–8h OR Ciprofloxacin 800–1200 mg IV q8–12h OR Meropenem 6 g/day IV q8h
- Staphylococcus aureus
- Methicillin susceptible (MSSA)
- Preferred regimen: Nafcillin 9–12 g/day IV q4h OR Oxacillin 9–12 g/day IV q4h
- Alternative regimen: Vancomycin 30–45 mg/kg/day IV q8–12h OR Meropenem 6 g/day IV q8h
- Methicillin resistant (MRSA)
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h
- Alternative regimen: Trimethoprim-Sulfamethoxazole 10–20 mg/kg/day q6–12h OR Linezolid 600 mg IV q12h
- Note: Consider the addition of Rifampin 600 mg qd or 300–450 mg bid to Vancomycin in adult patients.
- Staphylococcus epidermidis
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h
- Alternative regimen: Linezolid 600 mg IV q12h
- Streptococcus agalactiae
- Preferred regimen: Ampicillin 12 g/day IV q4h OR Penicillin G 24 MU/day IV q4h
- Alternative regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Streptococcus pneumoniae
- Penicillin MIC < 0.1 μg/mL
- Preferred regimen: Penicillin G 24 MU/day IV q4h OR Ampicillin 12 g/day IV q4h
- Alternative regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h OR Chloramphenicol 4–6 g/day IV q6h
- Penicillin MIC 0.1–1.0 μg/mL
- Preferred regimen: Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h
- Alternative regimen: Cefepime 6 g/day IV q8h OR Meropenem 6 g/day IV q8h
- Penicillin MIC ≥ 2.0 μg/mL
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h)
- Alternative regimen: Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h
- Cefotaxime or ceftriaxone MIC ≥ 1.0 μg/mL
- Preferred regimen: Vancomycin 30–45 mg/kg/day IV q8–12h AND (Ceftriaxone 4 g IV q12–24h OR Cefotaxime 8–12 g/day q4–6h)
- Alternative regimen: Gatifloxacin 400 mg/day IV q24h OR Moxifloxacin 400 mg/day IV q24h
- Pediatric dose:
-
- Neonates age 0–7 days: 15–20 mg/kg/day q12h
- Neonates age 8–28 days: 30 mg/kg/day q8h
- Infants and children: 20–30 mg/kg/day q8h
-
- Neonates age 0–7 days: 150 mg/kg/day q8h
- Neonates age 8–28 days: 200 mg/kg/day q6–8h
- Infants and children: 300 mg/kg/day q6h
-
-
- Infants and children: 150 mg/kg/day q8h
-
-
- Neonates age 0–7 days: 100–150 mg/kg/day q8–12h
- Neonates age 8–28 days: 150–200 mg/kg/day q6–8h
- Infants and children: 225–300 mg/kg/day q6–8h
-
-
- Neonates age 0–7 days: 100–150 mg/kg/day q8–12h
- Neonates age 8–28 days: 150 mg/kg q8h
- Infants and children: 150 mg/kg
-
-
- Infants and children: 80–100 mg/kg/day q12–24h
-
-
- Neonates age 0–7 days: 25 mg/kg/day q24h
- Neonates age 8–28 days: 50 mg/kg/day q12–24h
- Infants and children: 75–100 mg/kg/day q6h
-
-
- Neonates age 0–7 days: 5 mg/kg/day q12h
- Neonates age 8–28 days: 7.5 mg/kg/day q8h
- Infants and children: 7.5 mg/kg/day q8h
-
-
- Infants and children: 120 mg/kg/day q8h
-
-
- Neonates age 0–7 days: 75 mg/kg/day q8–12h
- Neonates age 8–28 days: 100–150 mg/kg/day q6–8h
- Infants and children: 200 mg/kg/day q6h
-
-
- Neonates age 0–7 days: 75 mg/kg/day q8–12h
- Neonates age 8–28 days: 150–200 mg/kg/day q6–8h
- Infants and children: 200 mg/kg/day q6h
-
-
- Neonates age 0–7 days: 0.15 MU/kg/day q8–12h
- Neonates age 8–28 days: 0.2 MU/kg/day q6–8h
- Infants and children: 0.3 MU/kg/day q4–6h
-
-
- Neonates age 8–28 days: 10–20 mg/kg/day q12h
- Infants and children: 10–20 mg/kg/day q12–24h
-
-
- Neonates age 0–7 days: 5 mg/kg/day q12h
- Neonates age 8–28 days: 7.5 mg/kg/day q8h
- Infants and children: 7.5 mg/kg/day q8h
-
-
- Infants and children: 10–20 mg/kg q6–12h
-
-
- Neonates age 0–7 days: 20–30 mg/kg/day q8–12h
- Neonates age 8–28 days: 30–45 mg/kg/day q6–8h
- Infants and children: 60 mg/kg/day q6h
-
- ↑ Tunkel, Allan R.; Hartman, Barry J.; Kaplan, Sheldon L.; Kaufman, Bruce A.; Roos, Karen L.; Scheld, W. Michael; Whitley, Richard J. (2004-11-01). "Practice guidelines for the management of bacterial meningitis". Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America. 39 (9): 1267–1284. doi:10.1086/425368. ISSN 1537-6591. PMID 15494903.
- ↑ Blumberg, Henry M.; Burman, William J.; Chaisson, Richard E.; Daley, Charles L.; Etkind, Sue C.; Friedman, Lloyd N.; Fujiwara, Paula; Grzemska, Malgosia; Hopewell, Philip C.; Iseman, Michael D.; Jasmer, Robert M.; Koppaka, Venkatarama; Menzies, Richard I.; O'Brien, Richard J.; Reves, Randall R.; Reichman, Lee B.; Simone, Patricia M.; Starke, Jeffrey R.; Vernon, Andrew A.; American Thoracic Society, Centers for Disease Control and Prevention and the Infectious Diseases Society (2003-02-15). "American Thoracic Society/Centers for Disease Control and Prevention/Infectious Diseases Society of America: treatment of tuberculosis". American Journal of Respiratory and Critical Care Medicine. 167 (4): 603–662. doi:10.1164/rccm.167.4.603. ISSN 1073-449X. PMID 12588714.
- ↑ Rock, R. Bryan; Olin, Michael; Baker, Cristina A.; Molitor, Thomas W.; Peterson, Phillip K. (2008-04). "Central nervous system tuberculosis: pathogenesis and clinical aspects". Clinical Microbiology Reviews. 21 (2): 243–261, table of contents. doi:10.1128/CMR.00042-07. ISSN 1098-6618. PMC 2292571. PMID 18400795. Check date values in:
|date=
(help) - ↑ Thwaites, Guy; Fisher, Martin; Hemingway, Cheryl; Scott, Geoff; Solomon, Tom; Innes, John; British Infection Society (2009-09). "British Infection Society guidelines for the diagnosis and treatment of tuberculosis of the central nervous system in adults and children". The Journal of Infection. 59 (3): 167–187. doi:10.1016/j.jinf.2009.06.011. ISSN 1532-2742. PMID 19643501. Check date values in:
|date=
(help) - ↑ American Thoracic Society; CDC; Infectious Diseases Society of America (2003-06-20). "Treatment of tuberculosis". MMWR. Recommendations and reports: Morbidity and mortality weekly report. Recommendations and reports / Centers for Disease Control. 52 (RR-11): 1–77. ISSN 1057-5987. PMID 12836625.
- ↑ Treatment of Tuberculosis: Guidelines. WHO Guidelines Approved by the Guidelines Review Committee (4th ed.). Geneva: World Health Organization. 2010. ISBN 9789241547833. PMID 23741786. Retrieved 2015-06-08.
- ↑ Treatment of Tuberculosis: Guidelines. WHO Guidelines Approved by the Guidelines Review Committee (4th ed.). Geneva: World Health Organization. 2010. ISBN 9789241547833. PMID 23741786. Retrieved 2015-06-08.
- ↑ American Thoracic Society; CDC; Infectious Diseases Society of America (2003-06-20). "Treatment of tuberculosis". MMWR. Recommendations and reports: Morbidity and mortality weekly report. Recommendations and reports / Centers for Disease Control. 52 (RR-11): 1–77. ISSN 1057-5987. PMID 12836625.
- ↑ Thwaites, Guy E.; Nguyen, Duc Bang; Nguyen, Huy Dung; Hoang, Thi Quy; Do, Thi Tuong Oanh; Nguyen, Thi Cam Thoa; Nguyen, Quang Hien; Nguyen, Tri Thuc; Nguyen, Ngoc Hai; Nguyen, Thi Ngoc Lan; Nguyen, Ngoc Lan; Nguyen, Hong Duc; Vu, Ngoc Tuan; Cao, Huu Hiep; Tran, Thi Hong Chau; Pham, Phuong Mai; Nguyen, Thi Dung; Stepniewska, Kasia; White, Nicholas J.; Tran, Tinh Hien; Farrar, Jeremy J. (2004-10-21). "Dexamethasone for the treatment of tuberculous meningitis in adolescents and adults". The New England Journal of Medicine. 351 (17): 1741–1751. doi:10.1056/NEJMoa040573. ISSN 1533-4406. PMID 15496623.
- ↑ Thwaites, Guy; Fisher, Martin; Hemingway, Cheryl; Scott, Geoff; Solomon, Tom; Innes, John; British Infection Society (2009-09). "British Infection Society guidelines for the diagnosis and treatment of tuberculosis of the central nervous system in adults and children". The Journal of Infection. 59 (3): 167–187. doi:10.1016/j.jinf.2009.06.011. ISSN 1532-2742. PMID 19643501. Check date values in:
|date=
(help) - ↑ Thwaites, Guy; Fisher, Martin; Hemingway, Cheryl; Scott, Geoff; Solomon, Tom; Innes, John; British Infection Society (2009-09). "British Infection Society guidelines for the diagnosis and treatment of tuberculosis of the central nervous system in adults and children". The Journal of Infection. 59 (3): 167–187. doi:10.1016/j.jinf.2009.06.011. ISSN 1532-2742. PMID 19643501. Check date values in:
|date=
(help) - ↑ Thwaites, Guy; Fisher, Martin; Hemingway, Cheryl; Scott, Geoff; Solomon, Tom; Innes, John; British Infection Society (2009-09). "British Infection Society guidelines for the diagnosis and treatment of tuberculosis of the central nervous system in adults and children". The Journal of Infection. 59 (3): 167–187. doi:10.1016/j.jinf.2009.06.011. ISSN 1532-2742. PMID 19643501. Check date values in:
|date=
(help) - ↑ Thwaites, Guy; Fisher, Martin; Hemingway, Cheryl; Scott, Geoff; Solomon, Tom; Innes, John; British Infection Society (2009-09). "British Infection Society guidelines for the diagnosis and treatment of tuberculosis of the central nervous system in adults and children". The Journal of Infection. 59 (3): 167–187. doi:10.1016/j.jinf.2009.06.011. ISSN 1532-2742. PMID 19643501. Check date values in:
|date=
(help) - ↑ Rock, R. Bryan; Olin, Michael; Baker, Cristina A.; Molitor, Thomas W.; Peterson, Phillip K. (2008-04). "Central nervous system tuberculosis: pathogenesis and clinical aspects". Clinical Microbiology Reviews. 21 (2): 243–261, table of contents. doi:10.1128/CMR.00042-07. ISSN 1098-6618. PMC 2292571. PMID 18400795. Check date values in:
|date=
(help) - ↑ Rock, R. Bryan; Olin, Michael; Baker, Cristina A.; Molitor, Thomas W.; Peterson, Phillip K. (2008-04). "Central nervous system tuberculosis: pathogenesis and clinical aspects". Clinical Microbiology Reviews. 21 (2): 243–261, table of contents. doi:10.1128/CMR.00042-07. ISSN 1098-6618. PMC 2292571. PMID 18400795. Check date values in:
|date=
(help)