2E. Beller,M. Tattersall,T. Lumley,J. Levi,D. Dalley,I. Olver,J. Page,E. Abdi,C. Wynne,M. Friedlander,D. Boadle,H. Wheeler,S. Margrie,R. J. Simes. Improved quality of life with megestrol acetate in patients with endocrine-insensitive advanced cancer: A randomised placebo-controlled trial[J] 1997,Annals of Oncology(3):277~283