Tapnikar LA, Joshi MP, Soni AA, Saoji AV. Expounding nested case control studies in the year of COVID-19: a scoping review and sub group meta-analysis. Int J Community Med Public Health [Internet]. 2022 Mar. 25 [cited 2025 Jun. 24];9(4):1927-34. Available from: https://www.ijcmph.com/index.php/ijcmph/article/view/9586