title: Biological effectiveness of the sympto thermal rhythm method.  An international study.  A preliminary report.
authors.lastname: Rice Fj Lanctot
authors.forename: C
authors.initials: C
authors.lastname: Garcia-devasa
mesh_terms: D000349:Africa; D017954:Africa South of the Sahara; D000351:Africa, Eastern; D000352:Africa, Northern; D000367:Age Factors; D000569:Americas; D001723:Birth Rate; D002170:Canada; D003105:Colombia; D003267:Contraception; D003710:Demography; D019049:Developed Countries; D003906:Developing Countries; D004467:Economics; D005060:Europe; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005298:Fertility; D005602:France; D007843:Latin America; D008436:Mauritius; D012252:Natural Family Planning Methods; D009656:North America; D010061:Ovulation Detection; D010298:Parity; D010342:Patient Acceptance of Health Care; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011446:Prospective Studies; D012106:Research; D012923:Social Class; D012959:Socioeconomic Factors; D013020:South America; D014481:United States
keywords: Acceptor Characteristics; Africa; Africa South Of The Sahara; Age Factors; Americas; Canada; Cervical Mucus Method; Colombia; Contraception; Contraceptive Effectiveness; Demographic Factors; Developed Countries; Developing Countries; Eastern Africa; Economic Factors; English Speaking Africa; Europe; Family Planning; Family Planning, Behavioral Methods; Fertility; Fertility Measurements; France; French Speaking Africa; Latin America; Mauritius; Mediterranean Countries; Natural Family Planning; North America; Northern America; Parity; Population; Population Characteristics; Population Dynamics; Prospective Studies; Research Methodology; Rhythm Method, Calendar; Socioeconomic Factors; Socioeconomic Status; South America; Studies; United States; Use-effectiveness; Western Europe