1. Department of Hematology Oncology, San Francisco Medical Center, Kaiser Permanente Northern California, San Francisco, CA, USA
2. Department of Hematology Oncology, Sacramento Medical Center, Kaiser Permanente Northern California, Sacramento, CA, USA
3. Department of Hematology Oncology, Antioch Medical Center, Kaiser Permanente Northern California, Antioch, CA, USA
4. Department of Hematology Oncology, Oakland Medical Center, Kaiser Permanente Northern California, Oakland, CA, USA