22.5 References

Glenny 2005  
Glenny AM, Altman DG, Song F, Sakarovitch C, Deeks JJ, D'Amico R, Bradburn M, Eastwood AJ. Indirect comparisons of competing interventions. Health Technology Assessment 2005; 9: 26.

GRADE Working Group 2004  
GRADE Working Group. Grading quality of evidence and strength of recommendations. BMJ 2004; 328: 1490-1494.

Oxman 1994  
Oxman AD. Checklists for review articles. BMJ 1994; 309: 648-651.

Petticrew 1999  
Petticrew M, Song F, Wilson P, Wright K. Quality-assessed reviews of health care interventions and the database of abstracts of reviews of effectiveness (DARE). NHS CRD Review, Dissemination, and Information Teams. International Journal of Technology Assessment in Health Care 1999; 15: 671-678.

Russell 2006  
Russell K, Kiddoo D. The Cochrane Library and nocturnal enuresis; an umbrella review. Evidence-Based Child Health 2006; 1: 5-8.

Shea 2006  
Shea B, Boers M, Grimshaw JM, Hamel C, Bouter LM. Does updating improve the methodological and reporting quality of systematic reviews? BMC Medical Research Methodology 2006; 6: 27.