Aiza Mustafa, Anum Mustafa, Manoj Kumar, Rozina Iqbal, Ali Faisal Saleem, Alina Mustafa, “Frequency of Age-Appropriate Vaccination in Children Till 15 Months of Age Admitted at the Aga Khan Hospital, Karachi, Pakistan”, Pakistan Journal of Medical & Health Sciences, vol. 17, no. 01, p. 445, Mar. 2023.