title: Cooperative trials in thoracic oncology are important.
authors.forename: J R
authors.initials: JR
authors.lastname: Benfield
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D013899:Thoracic Neoplasms / Q000601:surgery / Q000628:therapy*; D013903:Thoracic Surgery / Q000592:standards / Q000639:trends