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Authors' reply

BMJ 1996; 313 doi: (Published 31 August 1996) Cite this as: BMJ 1996;313:561
  1. Deborah Marshall,
  2. Olof Johnell,
  3. Hans Wedel
  1. Research associate Swedish Council of Technology Assessment in Health Care, Box 16158, S-10324 Stockholm, Sweden
  2. Professor Department of Orthopaedics, Malmo General Hospital, S-21401 Malmo, Sweden
  3. Professor Nordic School of Public Health, Box 12133, S-40242 Gothenburg, Sweden

    EDITOR,—Kate Brooks and colleagues identify several points that were lacking from our review. We agree that, ideally, such details should be included in an article, but various limitations sometimes prevent this. We attempted to identify all the important, relevant studies that were available at the time. Because these were longitudinal studies and our initial searches in many languages did not identify any prospective studies reported in languages other than English, we thought it reasonable that the subsequent update over a period of about …

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