Kainat Amjad, Afrah Mudassir, Husnain Hashim, Maria Sattar, Danial Bajwa, Muhammad Arif 2022. Prevalence of Primary Types of Headache and Its Impact on Daily Life in Health Care Professionals in a Tertiary Care Health Institution. Pakistan Journal of Medical & Health Sciences. 16, 05 (Aug. 2022), 1532. DOI:https://doi.org/10.53350/pjmhs221651532.