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. 2022 Oct 27;13:974788. doi: 10.3389/fendo.2022.974788

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Copyright © 2022 Barabás, Makkai, Farkas, Horváth, Nagy, Váradi and Zelena

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Pie charts demonstrate the percentage of vaccinated and unvaccinated individuals (A) and the proportion of the types of vaccines received in the vaccinated group (B). The percentage of participants with and without menstrual cycle problems after vaccination is also shown (C). It is also indicated how many doses of vaccine were given to those with menstrual cycle problems (D). In addition, pie charts show how the proportion of individuals with menstrual problems and without menstrual problems varied for mRNA-based (Pfizer-BioNTech, Moderna), adenovirus-based (AstraZeneca, Sputnik, Janssen) and conventional vaccines (Sinopharm) (E).