@misc{misc5650126c, title = {Re: Challenges and future directions in menstrual cycle research [letter]}, author = {Prado, Raul Cosme Ramos and Silveira, Rodrigo and Takito, Monica Yuri and Asano, Ricardo Yukio}, year = {2021}, doi = {10.1111/ppe.12708}, journal = {Paediatric and Perinatal Epidemiology} }