Name Info Provider Link
Birth Control free resource MedlinePlus Health Information https://medlineplus.gov/birthcontrol.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/27859338/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/27859338
subscription/membership/fee required Wiley https://doi.org/10.1111/sifp.12006
free resource scite Smart Citations https://scite.ai/reports/27859338