Authors' reply

BMJ 1996; 313 doi: https://doi.org/10.1136/bmj.313.7053.364b (Published 10 August 1996) Cite this as: BMJ 1996;313:364
  1. Rudiger Pittrof,
  2. Stuart Campbell,
  3. Christoph Lees,
  4. Catherine Thompson,
  5. Andrew Pickles,
  6. John Martin
  1. Honorary lecturer Professor Department of Obstetrics and Gynaecology, St George's Hospital Medical School, London SW17 0RE
  2. Registrar Clinical research associate Department of Obstetrics and Gynaecology, King's College Hospital, London SE5 9RS
  3. Medical Research Council reader in medical statistics MRC Child Psychiatry Unit, Institute of Psychiatry, London SE5 8AF
  4. British Heart Foundation professor of cardiovascular science Cruciform Project, University College, London W1

    EDITOR,—We fear that A Li Wan Po and R W Stones have missed the main point of our study. We recruited a small, highly selected group of women with severe dysmenorrhoea primarily to see whether a very small dose of transdermal glyceryl trinitrate had any effect on period pain. Using self score charts and standard …

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