Aini, Nur Sofiatul, et al. “The Correlation Between ABO Blood Type and Ethnicity to the COVID-19 Infection Risk in Patients at RSUD Dr. Soetomo Surabaya ”. LenteraBio : Berkala Ilmiah Biologi , vol. 12, no. 2, May 2023, pp. 186-95, doi:10.26740/lenterabio.v12n2.p186-195.