ZAFAR, N.; ASLAM, M.; ALI, A.; KHATOON, A.; NAZIR, A.; TANVEER, Q.; BILAL, M.; KANWAR, R.; QADEER, A.; SIKANDAR, M.; ZAFAR, A. Probiotics: Helpful for the prevention of COVID-19?. Biomedical Research and Therapy, v. 7, n. 11, p. 4086-4099, 5 nov. 2020.