6. 附上NCBI article 一则:
- The highest pregnancy rate was observed with an abstinence interval of 3 days or less (14%) and the lowest pregnancy rate seen with an abstinence interval of 10 days or more (3%). http://www.ncbi.nlm.nih.gov/pubmed/16169402
如果你连这种published article都吐槽我就没话讲了。