1. Center for Pharmacoepidemiology and Pharmacoeconomic Research University of Illinois at Chicago Chicago IL USA
2. Department of Pharmacy Practice College of Pharmacy University of Illinois at Chicago Chicago IL USA
3. Division of Hematology & Oncology Department of Medicine, Comprehensive Sickle Cell Center University of Illinois at Chicago Chicago IL USA
4. Department of Medicine Section of Academic Internal Medicine & Geriatrics University of Illinois at Chicago Chicago IL USA
5. Division of Public Health Sciences Epidemiology Program Fred Hutchinson Cancer Research Center Seattle WA USA