CHEUNG, S. Y. C. Menstruation: the fifth vital sign in women of reproductive age. Hong Kong Journal of Gynaecology, Obstetrics and Midwifery, [S. l.], v. 25, n. 2, 2025. Disponível em: https://hkjgom.org/home/article/view/388. Acesso em: 18 jul. 2025.