Year: 1991 Source: BMJ. British Medical Journal, v.302, no.6785, (May 11, 1991), p.1148 SIEC No: 19911043

Letters to the editor disputing Crombie’s previously reported findings appeared in an earlier edition of BMJ (see SIEC #911042). In this edition of BMJ, Dr. Crombie responds to the issues raised in these letters.