The association of Coronavirus Disease-19 mortality and prior bacille Calmette-Guerin vaccination: a robust ecological analysis using unsupervised machine learning.
Brooks NA, Puri A, Garg S, Nag S, Corbo J, Turabi AE, Kaka N, Zemmel RW, Hegarty PK, Kamat AM.
Sci Rep. 2021 01 12. 11(1):774. PMID: 33436946