Menstruation usually starts between the ages of 11 and 14 and continues into the forties or fifties. At first the periods may be irregular, but once they are established they usually occur in a fairly definite rhythm, at intervals of 21 to 35 days. In these regular cycles, there may be ...
B、Screening is with endometrial biopsy and starts at age 40 C、Screening is with endometrial biopsy and starts at age 50 D、 Screening is with ultrasound and starts at age 40 E、Screening is with ultrasound and starts at age 50 点击查看答案&解析手机看题 你可能感兴趣的试题 多项选择题 牙...