[1] Brown Univ, Alpert Med Sch, Providence, RI 02903 USA
[2] Hennepin Healthcare, Minneapolis, MN USA
[3] Univ Minnesota, Med Sch, Minneapolis, MN USA
[4] Butler Hosp, Providence, RI USA
[5] Miriam Hosp, Lifespan Phys Grp, Providence, RI USA
[6] Boston Univ, Sch Publ Hlth, Boston, MA USA