Influenza Pandemics and Tuberculosis Mortality in 1889 and 1918: Analysis of Historical Data from Switzerland Zürcher, Kathrin ; Zwahlen, Marcel ; Ballif, Marie ; Rieder, Hans L. ; Egger, Matthias ; Fenner, Lukas Abstract Publication: PLoS ONE Pub Date: October 2016 DOI: 10.1371/journal.pone.0162575 Bibcode: 2016PLoSO..1162575Z