APA (7th ed.) Citation

M, U., K, O., Y, H., & T, A. (2020). BCG Vaccination and Mortality of COVID-19 across 173 Countries: An Ecological Study. International journal of environmental research and public health, 17(15), . https://doi.org/10.3390/ijerph17155589

Chicago Style (17th ed.) Citation

M, Urashima, Otani K, Hasegawa Y, and Akutsu T. "BCG Vaccination and Mortality of COVID-19 Across 173 Countries: An Ecological Study." International Journal of Environmental Research and Public Health 17, no. 15 (2020). https://doi.org/10.3390/ijerph17155589.

MLA (9th ed.) Citation

M, Urashima, et al. "BCG Vaccination and Mortality of COVID-19 Across 173 Countries: An Ecological Study." International Journal of Environmental Research and Public Health, vol. 17, no. 15, 2020, https://doi.org/10.3390/ijerph17155589.