A Study To Assess The Level Of Back Pain Among Postnatal Mothers. Journal of Pharmaceutical Negative Results, [S. l.], p. 9915–9922, 2022. DOI: 10.47750/pnr.2022.13.S09.1158. Disponível em: https://mail.pnrjournal.com/index.php/home/article/view/6859.. Acesso em: 15 oct. 2025.