title: The symptothermal (double check) method: an efficient natural method of family planning.
authors.forename: Françoise
authors.initials: F
authors.lastname: Soler
authors.forename: Enriqueta
authors.initials: E
authors.lastname: Barranco-Castillo
mesh_terms: D015982:Bias; D005260:Female; D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods; D012252:Natural Family Planning Methods; D049168:Pregnancy, Unplanned