Muhammad Ahmad, Aqsa Naveed, Saba Riaz, Aamir Gul Memon, Shahzaib Anwer, M. Hanan Zafar, M. Sanaullah, Saleh Shah, “Prevalence of Helmet Induced Headache among Bikers”, Pakistan Journal of Medical & Health Sciences, vol. 16, no. 09, p. 42, Oct. 2022.