Arshad, M. S., H. M. Anwar-ul-Haq, M. Adnan, and A. Zulqarnain. “Frequency and Pattern of Paediatric Heart Diseases: Five years Experience at The Children’s Hospital, Multan”. Pakistan Journal of Medical Sciences, Vol. 36, no. 6, Aug. 2020, doi:10.12669/pjms.36.6.2312.