Voriconazole compared with liposomal amphotericin B for empirical antifungal therapy in patients with neutropenia and persistent fever. - Walsh TJ; Pappas P; Winston DJ; Lazarus HM; Petersen F; Raffalli J; Yanovich S; Stiff P; Greenberg R; Donowitz G; Lee J; National Institute of Allergy and Infectious Diseases Mycoses Study Group; et al. (New England Journal of Medicine, 2002)