S. Akram, M. A. Khan, I. Qaisar, A. Rehman, W. Ijaz, and shafaq Khalid, “Paraphenylene diamine (Kala Pathar) poisoning in children of Bahawalpur and surrounding areas”, J Fatima Jinnah Med Univ, vol. 16, no. 1, pp. 33–37, Dec. 2022.