| Literature DB >> 29970939 |
Richard J Fehring1, Kathleen Raviele2.
Abstract
Keywords: fertility awareness methods; fertility monitoring; natural family planning
Year: 2018 PMID: 29970939 PMCID: PMC6027111 DOI: 10.1177/0024363918756392
Source DB: PubMed Journal: Linacre Q ISSN: 0024-3639