1National Perinatal Epidemiology Unit.A Classified Bibliography of Controlled Trials In Perinatal Medicine 1940-1984.Oxford:Oxford University Press (for the World Health Organization),1985.
2Simes RJ.Publication bias:the case for an international registry of clinical trials.JClin Oncology,1986; 4:1529 1541.
3Hetherington J,Dickersin K,Chalmers I,et al.Retrospective and prospective identification of unpublished controlled trials:lessons from a survey of obstetricians and pediatricians.Pediatrics,1989;84:374-380.
4Chalmers I.Under-reporting research is scientific misconduct.JAMA,1990; 263:1405-1408.
5Hemminki E.Study of information submitted by drug companies to licensing authorities.BMJ,1980; 280:833-836.
6Lock S,Wells F.Preface to the second edition.In:Lock S,Wells F,eds.Fraud and Misconduct In Medical Research.London:BMJ Publishing Group,1996:xi-xii.
7Sykes R.Being a modern pharmaceutical company.BMJ,1998;317:1172.
