The Steatocrit: A Simple Method for Monitoring Fat Malabsorption in Patients with Cystic Fibrosis C. COLUMBO, R. MAIAVACCA, M. RONCHI, E. CONSALVO, M. AMORETTI, AND A. GIUNTA The Laboratorio Malattie Metaboliche, ICP, Milan, Italy, and the Department of Pediatrics at the University of Milan, Milan, Italy