Sick leave request following anti-COVID-19 vaccine administration is low among healthcare workers: results from a retrospective cross-sectional monocentric study. - Schianchi A; Ughi N; Cassano G; Del Gaudio F; Dicuonzo A; Scaglione F; Alberti PM; Rossetti C; Micheloni G; Zoppini L; Bellavia G; Giroldi S; et al. (European review for medical and pharmacological sciences, 2021)