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2. Bernstein EP Leyland N Gurland P Gare D Effect of administration of PGE2 gel and placebo gel into the cervical canal on cervical softening and induction of labour Proceedings of the Annual Meeting of Society of Obstetricans and Gynaecologists of Canada 1986 108
3. Prostaglandin E2 gel for cervical ripening and labour induction: a multicentre placebo-controlled trial [published erratum appears in Can Med Assoc J 1992 Apr 15;146(8):1290];Bernstein;Canadian Medical Association Journal,1991
4. Cervical ripening and labor induction with prostaglandin E2 gel: a placebo-controlled study;Bernstein;American Journal of Obstetrics and Gynecology,1987
5. Christilaw J King JF A randomised, placebo controlled trial to determine the effect of intracervical prostaglandin gel on the unripe cervix, prior to induction of labour Proceedings of the Annual Meeting of Society of Obstetricians and Gynaecologists of Canada; 1986 1986 107