[1] Natl Inst Diabet & Digest & Kidney Dis, Phoenix, AZ USA
[2] Baylor Coll Med, Houston, TX USA
[3] Univ Washington, Seattle, WA USA
[4] Wake Forest Sch Med, Winston Salem, NC USA
[5] Johns Hopkins Bloomberg Sch Publ Hlth, Baltimore, MD USA
[6] Lund Univ, Malmo, Sweden