[1] CUNY, Hunter Coll, CHEST, New York, NY 10021 USA
[2] Brown Univ, Dept Med, Warren Alpert Med Sch, Providence, RI 02912 USA
[3] Miriam Hosp, Div Infect Dis, Providence, RI 02906 USA
[4] Northeastern Univ, Dept Sociol & Anthropol, Boston, MA 02115 USA
[5] Brown Univ, Sch Publ Hlth, Providence, RI 02912 USA