AREEB AMJAD, ASFAR ANWAR, SHUJAAT ALI, FARAH WASEEM, HADIA KHAN, MARIYAH HIDAYAT. The Challenges for Implementation of Policies Causing A Delay in Mass Immunization Against Covid-19: A Cross Sectional Qualitative Study. Pakistan Journal of Medical & Health Sciences, [S. l.], v. 16, n. 11, p. 320, 2023. DOI: 10.53350/pjmhs20221611320. Disponível em: https://mail.pjmhsonline.com/index.php/pjmhs/article/view/3396. Acesso em: 19 sep. 2024.