Seventy-one postmenopausal women who previously underwent hysterectomy with or without oophorectomy and had total testosterone levels less than @ ng/dL or free testosterone levels less than @ pg/mL received a standardized transdermal estradiol regimen during the @-week run-in period and were randomized to receive weekly intramuscular injections of placebo or @ , @ , @ , or @ mg of testosterone enanthate for @ weeks .