Study	Reason for exclusion
Antonadou 2002	The study did not include disaggregated data on results for small cells lung cancer patients
Fietkau 2001	Not a randomized study
Hanna 2002	The study did not include disaggregated data on results for small cells lung cancer patients
Loehrer 1995	The study did not include disaggregated data on results for small cells lung cancer patients
Malacarne 1996	Not a randomized study
Mehta 2003	Small cells lung cancer patients excluded
Meyers 2004	The study did not include disaggregated data on results for small cells lung cancer patients. Maybe included in "other cancers" category
Pandya 2009	The study did not include disaggregated data on results for patients with BM
Postmus 1992	Non‐randomized study
Postmus 1995	Non‐randomized trial
Schiller 2001	The study did not include disaggregated data on results for patients with BM
Suh 2006	The study did not include disaggregated data on results for small cells lung cancer patients. Maybe included in "other cancers" category
Thomas 1990	Not a randomized study
Yue 2004	Non‐randomized trial