1. Internal Medicine; UT Health San Antonio; San Antonio Texas USA
2. University of Zurich; Zurich Switzerland
3. Department of Internal Medicine; UT-Houston Health Science Center; Houston TX USA
4. Houston Academy of Medicine; The Texas Medical Center Library; Houston USA
5. Department of Lymphoma & Myeloma; MD Anderson Cancer Center; Houston USA
6. Internal Medicine; UT-Houston Health Science Center; Houston TX USA