Correction to: Two Randomized Controlled Trials of Bacillus Calmette-Guérin Vaccination to reduce absenteeism among health care workers and hospital admission by elderly persons during the COVID-19 pandemic: A structured summary of the study protocols for two randomised controlled trials. - Ten Doesschate T; Moorlag SJCFM; van der Vaart TW; Taks E; Debisarun P; Ten Oever J; Bleeker-Rovers CP; Verhagen PB; Lalmohamed A; Ter Heine R; van Crevel R; van de Wijgert J; et al. (Trials, 2020)