Received: 26 June 2021
Accepted: 21 December 2021
First Online: 2 February 2022
: The study obtained approval from the Cantonal Ethics Board of Geneva, Switzerland (Commission cantonale d’éthique de la recherche [CCER], No. 2017–0110) and the Cameroonian National Ethics Committee for Human Health Research (No. 2018/07/1083/CE/CNERSH/SP). Protocols are carried out in accordance with relevant guidelines and regulations. All women provided informed written consent to participate in the study.
: Not applicable.
: The authors declare no competing interests.