Incidence and main causes of infertility in a resident population (1 850 000) of three French regions (1988 - 1989). - Thonneau,P.; Marchand,S.; Tallec,A.; Ferial,M.L.; Ducot,B.; Lansac,J.; Lopes,P.; Tabaste,J.M.; Spira,A. (Hum Reprod, 1991)