Perioperative predictors of early surgical revision and flap-related complications after microvascular free tissue transfer in head and neck reconstructions: a retrospective observational series. - Burkhard JP; Pfister J; Giger R; Huber M; Lädrach C; Waser M; Olariu R; Engel D; Löffel LM; Schaller B; Wuethrich PY (Clinical oral investigations, 2021)