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Citation: J. Sahota et al., Initial UK experience of the levonorgestrel-releasing contraceptive intravaginal ring, ADV CONTRAC, 15(4), 1999, pp. 313-324

Authors: Kirkman, RJE Bromham, DR O'Connor, TP Sahota, JE

Citation: Rje. Kirkman et al., Prospective multicentre study comparing levonorgestrel implants with a combined contraceptive pill: final results, BR J FAM PL, 25(2), 1999, pp. 36-40

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Citation: G. Piaggio et al., Comparison of three single doses of mifepristone as emergency contraception: a randomised trial, LANCET, 353(9154), 1999, pp. 697-702