Usman Shahid Butt, Aftab Alam Tanoli, Aisha Rasheed, Sadaf Nadir, Abdul Samad, Salman Pervaiz Rana. “Incidence, Clinical Presentation and Outcomes of Paraphenylenediamine (Kala Pathar) Poisoning in Patients Presenting at a Tertiary Care Hospital: A Prospective Study”. Pakistan Journal of Medical & Health Sciences, vol. 16, no. 12, Feb. 2023, p. 842, doi:10.53350/pjmhs20221612842.