[1] Loyola Univ, Dept Internal Med, MacNeal Hosp, Hlth Syst, North Riverside, IL USA
[2] Univ Pittsburgh, Div Gen Internal Med, Med Ctr, Pittsburgh, PA USA
[3] Univ Florida, Div Gen Internal Med, Coll Med Jacksonville, Jacksonville, FL USA
[4] Tufts Med Ctr, Div Gen Internal Med, Boston, MA USA
[5] Univ Chicago, Sect Gen Internal Med, Pritzker Sch Med, Chicago, IL USA
[6] Univ Texas Southwestern Med Sch, Div Gen Internal Med, Dallas, TX USA
[7] Emory Univ Med, Div Gen Internal Med, Atlanta, GA USA
[8] Univ Penn, Div Gen Internal Med, Perelman Sch Med, Philadelphia, PA USA