Battegay, M., R. Kuehl, S. Tschudin-Sutter, H. H. Hirsch, A. F. Widmer, and R. A. Neher. “2019-Novel Coronavirus (2019-nCoV): Estimating the Case Fatality Rate – a Word of Caution”. Swiss Medical Weekly, vol. 150, no. 0506, Feb. 2020, p. w20203, doi:10.4414/smw.2020.20203.