Hasni, I., Nursal, D.G.A., Markolinda, Y., Masrizal, M. and Yusmayanti, Y. 2022. Relationship of Smoking Risk Factors and Comorbids with Covid-19 Mortality: Systematic Review and Meta-Analysis. Jurnal Kesehatan Masyarakat Andalas. 16, 1 (Sep. 2022), 3–17. DOI:https://doi.org/10.24893/jkma.v16i1.798.