Covid 19 Vaccine And Menstrual Symptoms In Egyptian Adolescent Female Cross Sectional Study. Journal of Pharmaceutical Negative Results, [S. l.], p. 657–663, 2023. DOI: 10.47750/pnr.2023.14.02.82. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/7309.. Acesso em: 7 jun. 2026.