Kirby 1991, Martinez 1990 and te Velde 1989 requested patients to abstain from intercourse until three days after insemination location levitra generique 1 088 1 088 1 050 1 010 1 000 1 575 1 500 1 450 1 388 1 250 1 008 80 000 74 000 55 000 52 000 50 000 50 000 35 000 30 000 25 200