Topotecan versus cyclophosphamide, doxorubicin, and vincristine for the treatment of recurrent small-cell lung cancer

Joachim Von Pawel, Joan H. Schiller, Frances A. Shepherd, Scott Z. Fields, J. P. Kleisbauer, Nick G. Chrysson, David J. Stewart, Peter I. Clark, Martin C. Palmer, Alain Depierre, James Carmichael, Jacqueline B. Krebs, Graham Ross, Stephen R. Lane, Richard Gralla