Organization of preoperative workup stratified by impact per hospital. (A) Oncological workup. (B) Preoperative functional tests. COVID-19: coronavirus disease 2019; CPET: cardiopulmonary exercise testing; DLCO: diffusing capacity of the lung for carbon monoxide; EBUS: endobronchial ultrasound bronchoscopy; ECG: electrocardiography; PET-CT: positron emission tomography-computed tomography; V/Q: ventilation/perfusion.