[1] Temple Univ, Lewis Katz Sch Med, Philadelphia, PA 19122 USA
[2] Temple Univ, Dept Geog & Urban Studies, Philadelphia, PA 19122 USA
[3] Univ Florida, Emerging Pathogens Inst, Gainesville, FL USA
[4] Stanford Univ, Stanford, CA 94305 USA
[5] UCSF, Helen Diller Comprehens Canc Ctr, San Francisco, CA USA
[6] UCSF, Div Gen Internal Med & Computat Precis Hlth, San Francisco, CA USA