Marshall J
Lancet. 1976 Aug 7;2(7980):282-3. doi: 10.1016/s0140-6736(76)90732-7.
A field trial of combined use of the basal body-temperature and the secretion of cervical mucus as a means of regulating births is reported. 84 women followed the method through 1195 cycles between October 1, 1973 and May 31, 1976. There were 22 unplanned pregnancies.
本文报道了一项关于联合使用基础体温和宫颈粘液分泌来调节生育的现场试验。1973年10月1日至1976年5月31日期间，84名妇女按照该方法经历了1195个周期。其中有22次意外怀孕。
