Intrauterine contraception, advances anf future prospecs : proceedings of an International Workshop on Intrauterine Contraception, May 29 - June 1, 1984, Chicago, Illinois - Zatuchni, Gerald I.; Zatuchni, Gerald I.; Goldsmith, Alfredo; Goldsmith, Alfredo; Sciarra, John J.; Sciarra, John J. (Harper and Row, 1985)