Interventions for emergency contraception. [No authors listed] J Shen, Y Che, E Showell, K Chen… - Cochrane Database of …, 2017 - cochranelibrary.com GSID: s7wvu54PKiIJ
Sexual identity, sex of sexual contacts, and health-related behaviors among students in grades 9–12—United States and selected sites, 2015. [No authors listed] L Kann, EOM Olsen, T McManus, WA Harris… - Morbidity and Mortality …, 2016 - JSTOR GSID: DF-WUl_XeeUJ
