“Evaluation of The Efficiency of Immunization Services at A Primary Health Care Centre of a Squatter Settlement in Karachi Research work was done at Ziauddin University, Karachi” (2018) Journal of Fatima Jinnah Medical University, 8(3). Available at: https://mail.jfjmu.com/index.php/ojs/article/view/145 (Accessed: 15 June 2026).