Table 1. Search terms.

Domain	Search terms	Boolean operator
Population of interest	Co-morbidity, co-morbidities, comorbidity, comorbidities, "pulmonary function", "lung function", "pulmonary function test", "pulmonary function tests", "lung function test", "lung function tests", "cardiopulmonary reserve".	OR
Intervention	Lobectomy, lobectomies, "lung resection", "lung resections", "pulmonary resection", "pulmonary resections", pneumonectomy a .	OR
Comparator	VATS, "minimally invasive thoracic surgery", "minimally invasive thoracic surgeries", "video-assisted thoracic surgery", "video-assisted thoracic surgeries", "video-assisted thoracoscopic surgery", "video-assisted thoracoscopic surgeries", " video-assisted thoracoscopic resection", "video-assisted thoracoscopic resections", thoracoscopic, endoscopic, "thoracic surgery, video-assisted", "minimally invasive surgery", "minimally invasive surgeries", "video-assisted surgery", "video-assisted surgeries", "video-assisted resection", "video-assisted resections", "minimally invasive resection", "minimally invasive resections".	OR
Outcome	Outcome, outcomes, complication, complications, treatment outcome	OR

^aMeSH major topic, only for PubMed.