Corrigendum to 'Thymomectomy plus total thymectomy versus simple thymomectomy for early-stage thymoma without myasthenia gravis: a European Society of Thoracic Surgeons Thymic Working Group Study'. - Guerrera F; Falcoz PE; Moser B; van Raemdonck D; Bille A; Toker A; Spaggiari L; Ampollini L; Filippini C; Thomas PA; Verdonck B; Mendogni P; et al. (European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, 2021)