Willis SK, Mathew HM, Wise LA, Hatch EE, Wesselink AK, Rothman KJ, Mahalingaiah S. Menstrual patterns and self-reported hirsutism as assessed via the modified Ferriman-Gallwey scale: a cross-sectional study. Eur J Obstet Gynecol Reprod Biol. 2020 May 1;248:137-43. doi: 10.1016/j.ejogrb.2020.03.012
Rodríguez-Mías NL, Martínez-Franco E, Aguado J, Sánchez E, Amat-Tardiu L. Pelvic organ prolapse and stress urinary incontinence, do they share the same risk factors? Eur J Obstet Gynecol Reprod Biol. 2015 Jul;190:52-7. doi: 10.1016/j.ejogrb.2015.04.015
Rothman KJ, Glass RL, Espinal F, Velez H. Caries-free teeth in the absence of fluoride ion. J Public Health Dent. 1972;32(4):225-8. doi: 10.1111/j.1752-7325.1972.tb03977.x