Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0010-7824(21)00223-7
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/34270979/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/34270979
subscription/membership/fee required ClinicalKey https://www.clinicalkey.com/content/playBy/pii?v=S0010-7824(21)00223-7