1.
Naeem U, Eqbal F. Is the hygiene hypothesis a plausible explanation for the asymmetry in COVID-19 mortality?. J Pak Med Assoc [Internet]. 2022 Apr. 5 [cited 2025 Apr. 18];72(4):793-. Available from: https://mail.jpma.org.pk/index.php/public_html/article/view/3130