title: Effectiveness of the sympto-thermal method of natural family planning: an international study.
mesh_terms: D000328:Adult; D001831:Body Temperature; D002170:Canada; D002582:Cervix Mucus / Q000502:physiology; D003105:Colombia; D005193:Family Planning Services; D005260:Female; D005602:France; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008436:Mauritius; D010061:Ovulation Detection; D011247:Pregnancy; D012189:Retrospective Studies; D013223:Statistics as Topic; D014481:United States