Talent and romance columnist Gwang Jung-un, angry comment on SNS. .
● A professor at Seoul National University Hospital refers to the graph presented.
● 61.2% extravaginal ejaculation, 20.0 adjustment of menstrual cycle, 11.0% condom use, 10.1% contraceptive.
• More than 80% use condoms in men who use less than contraceptive methods. .