[1] Univ Hosp Cleveland, Med Ctr, Dept Internal Med, Cleveland, OH 44106 USA
[2] Univ Arizona, Dept Internal Med, Tucson, AZ USA
[3] Beth Israel Deaconess Med Ctr, Dept Internal Med, Boston, MA 02215 USA
[4] Case Western Reserve Univ, Sch Med, Hlth Educ Campus, Cleveland, OH 44106 USA
[5] Univ Pittsburgh, Med Ctr McKeesport, Dept Internal Med, Mckeesport, PA USA
[6] Cleveland Clin, Taussig Canc Ctr, Cleveland, OH 44106 USA
[7] Beth Israel Deaconess Med Ctr, Knowledge Serv, Boston, MA 02215 USA
[8] Cleveland Clin, Div Hematol & Oncol, Cleveland, OH 44106 USA