[1] Univ Calif San Francisco East Bay, Surg, Oakland, CA USA
[2] Kaiser San Francisco Med Ctr, Hematol Oncol, San Francisco, CA USA
[3] Kaiser Permanente Northern Calif, Div Res, Oakland, CA USA
[4] Kaiser Permanente Oakland Med Ctr, Thorac Surg, Oakland, CA USA
[5] Kaiser Permanente Vallejo Med Ctr, Oncol, Vallejo, CA USA