The purpose of this study is to determine the efficacy of Pegfilgrastim in the mobilization of autologous peripheral blood stem cells (PBSCs), defined as cell yield ≥ 3 x 10e6 CD34+/kg and to assess the costs related to Pegfilgrastim use in the mobilization of autologous PBSCs. Also to determine the side effects of Pegfilgrastim in the mobilization of autologous peripheral blood stem cells.