Bennett 2003
Bennett DA, Jull A. FDA: untapped source of unpublished trials. The Lancet 2003; 361: 1402-1403.
De Angelis 2004
De Angelis CD, Drazen JM, Frizelle FA, Haug C, Hoey J, Horton R, Kotzin S, Laine C, Marusic A, Overbeke AJ, Schroeder TV, Sox HC, Van der Weyden MB, International Committee of Medical Journal Editors. Clinical trial registration: a statement from the International Committee of Medical Journal Editors. JAMA 2004; 292: 1363-1364.
De Angelis 2005
De Angelis CD, Drazen JM, Frizelle FA, Haug C, Hoey J, Horton R, Kotzin S, Laine C, Marusic A, Overbeke AJ, Schroeder TV, Sox HC, Van der Weyden MB, International Committee of Medical Journal Editors. Is this clinical trial fully registered? A statement from the International Committee of Medical Journal Editors. JAMA 2004; 293: 2927-2929.
Dickersin 1994
Dickersin K, Scherer R, Lefebvre C. Identifying relevant studies for systematic reviews. BMJ 1994; 309: 1286-1291.
Dickersin 2002
Dickersin K, Manheimer E, Wieland S, Robinson KA, Lefebvre C, McDonald S, CENTRAL Development Group. Development of the Cochrane Collaboration's CENTRAL Register of controlled clinical trials. Evaluation and the Health Professions 2002; 25: 38-64.
Eisinga 2007
Eisinga A, Siegfried N, Clarke M. The sensitivity and precision of search terms in Phases I, II and III of the Cochrane Highly Sensitive Search Strategy for identifying reports of randomized trials in MEDLINE in a specific area of health care - HIV/AIDS prevention and treatment interventions. Health Information and Libraries Journal 2007; 24: 103-109.
Eysenbach 2001
Eysenbach G, Tuische J, Diepgen TL. Evaluation of the usefulness of Internet searches to identify unpublished clinical trials for systematic reviews. Medical Informatics and the Internet in Medicine 2001; 26: 203-218.
Glanville 2006
Glanville JM, Lefebvre C, Miles JN, Camosso-Stefinovic J. How to identify randomized controlled trials in MEDLINE: ten years on. Journal of the Medical Library Association 2006; 94: 130-136.
Glanville 2008
Glanville J, Bayliss S, Booth A, Dundar Y, Fleeman ND, Foster L, Fraser C, Fernandes H, Fry-Smith A, Golder S, Lefebvre C, Miller C, Paisley S, Payne L, Price AM, Welch K, InterTASC Information Specialists' Subgroup. So many filters, so little time: The development of a Search Filter Appraisal Checklist. Journal of the Medical Library Association (in press, 2008).
Golder 2006
Golder S, McIntosh HM, Duffy S, Glanville J, Centre for Reviews and Dissemination and UK Cochrane Centre Search Filters Design Group. Developing efficient search strategies to identify reports of adverse effects in MEDLINE and EMBASE. Health Information and Libraries Journal 2006; 23: 3-12.
Greenhalgh 2005
Greenhalgh T, Peacock R. Effectiveness and efficiency of search methods in systematic reviews of complex evidence: audit of primary sources. BMJ 2005; 331: 1064-1065.
Hetherington 1989
Hetherington J, Dickersin K, Chalmers I, Meinert CL. Retrospective and prospective identification of unpublished controlled trials: lessons from a survey of obstetricians and pediatricians. Pediatrics 1989; 84: 374-380.
Hopewell 2007a
Hopewell S, Clarke M, Lefebvre C, Scherer R. Handsearching versus electronic searching to identify reports of randomized trials. Cochrane Database of Systematic Reviews 2007, Issue 2. Art No: MR000001.
Hopewell 2007b
Hopewell S, McDonald S, Clarke M, Egger M. Grey literature in meta-analyses of randomized trials of health care interventions. Cochrane Database of Systematic Reviews 2007, Issue 2. Art No: MR000010.
Horton 1997
Horton R. Medical editors trial amnesty. The Lancet 1997; 350: 756.
Khan 2001
Khan KS, ter Riet G, Glanville J, Sowden AJ, Kleijnen J (editors). Undertaking Systematic Reviews of Research on Effectiveness: CRD's Guidance for those Carrying Out or Commissioning Reviews (CRD Report Number 4) (2nd edition). York (UK): NHS Centre for Reviews and Dissemination, University of York, 2001.
Lefebvre 2001
Lefebvre C, Clarke M. Identifying randomised trials. In: Egger M, Davey Smith G, Altman DG (editors). Systematic Reviews in Health Care: Meta-analysis in Context (2nd edition). London (UK): BMJ Publication Group, 2001.
Lefebvre 2008
Lefebvre C, Eisinga A, McDonald S, Paul N. Enhancing access to reports of clinical trials published world-wide - the contribution of EMBASE records to the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library. Emerging Themes in Epidemiology (in press, 2008).
MacLean 2003
MacLean CH, Morton SC, Ofman JJ, Roth EA, Shekelle PG. How useful are unpublished data from the Food and Drug Administration in meta-analysis? Journal of Clinical Epidemiology 2003; 56: 44-51.
Mallett 2002
Mallett S, Hopewell S, Clarke M. Grey literature in systematic reviews: The first 1000 Cochrane systematic reviews. Fourth Symposium on Systematic Reviews: Pushing the Boundaries, Oxford (UK), 2002.
Manheimer 2002
Manheimer E, Anderson D. Survey of public information about ongoing clinical trials funded by industry: evaluation of completeness and accessibility. BMJ 2002; 325: 528-531.
McDonald 2002
McDonald S. Improving access to the international coverage of reports of controlled trials in electronic databases: a search of the Australasian Medical Index. Health Information and Libraries Journal 2002; 19: 14-20.
Montori 2005
Montori VM, Wilczynski NL, Morgan D, Haynes RB. Optimal search strategies for retrieving systematic reviews from Medline: analytical survey. BMJ 2005; 330: 68.
Royle 2003
Royle P, Milne R. Literature searching for randomized controlled trials used in Cochrane reviews: rapid versus exhaustive searches. International Journal of Technology Assessment in Health Care 2003; 19: 591-603.
Sampson 2006
Sampson M, McGowan J. Errors in search strategies were identified by type and frequency. Journal of Clinical Epidemiology 2006; 59: 1057-1063.
Scherer 2007
Scherer RW, Langenberg P, von Elm E. Full publication of results initially presented in abstracts. Cochrane Database of Systematic Reviews 2007, Issue 2. Art No: MR000005.
Suarez-Almazor 2000
Suarez-Almazor ME, Belseck E, Homik J, Dorgan M, Ramos-Remus C. Identifying clinical trials in the medical literature with electronic databases: MEDLINE alone is not enough. Controlled Clinical Trials 2000; 21: 476-487.
White 2001
White VJ, Glanville JM, Lefebvre C, Sheldon TA. A statistical approach to designing search filters to find systematic reviews: objectivity enhances accuracy. Journal of Information Science 2001; 27: 357-370.
Whiting 2008
Whiting P, Westwood M, Burke M, Sterne J, Glanville J. Systematic reviews of test accuracy should search a range of databases to identify primary studies. Journal of Clinical Epidemiology 2008; 61: 357.e1-357.e10.
Wilczynski 2007
Wilczynski NL, Haynes RB, Hedges Team. EMBASE search strategies achieved high sensitivity and specificity for retrieving methodologically sound systematic reviews. Journal of Clinical Epidemiology 2007; 60: 29-33.
Wong 2006
Wong SS, Wilczynski NL, Haynes RB. Developing optimal search strategies for detecting clinically sound treatment studies in EMBASE. Journal of the Medical Library Association 2006; 94: 41-47.