Gravar-mail: Melphalan 180 mg/m2 Can Be Safely Administered As Conditioning Regimen before an Autologous Stem Cell Transplantation (ASCT) in Multiple Myeloma Patients with Creatinine Clearance 60 mL/min/1.73 m2 or Lower with Use of Palifermin for Cytoprotection: Results of a Phase I Trial