[1] Feinstein Inst Med Res, Northwell Hlth, Manhasset, NY 11030 USA
[2] Harvard Med Sch, Boston, MA 02115 USA
[3] Univ Calif Los Angeles, Los Angeles, CA USA
[4] Albert Einstein Coll Med, New York, NY USA
[5] Oregon Hlth & Sci Univ, Portland, Dorset, England
[6] Univ Pittsburgh, Pittsburgh, PA USA
[7] Univ N Carolina, Chapel Hill, NC 27515 USA
[8] Mayo Clin, Rochester, MN USA
[9] Fairfax Family Practice Residency, Fairfax, VA USA
[10] Virginia Commonwealth Univ, Richmond, CA USA
[11] George Mason Univ, Fairfax, VA 22030 USA
[12] Univ Virginia, Charlottesville, VA USA
[13] NYU, New York, NY USA
[14] Stanford Univ, Stanford, CA 94305 USA
[15] Univ Massachusetts, Sch Med, Worcester, MA 01605 USA
[16] Boston Univ, Boston, MA 02215 USA
[17] Univ Missouri, Columbia, MO USA
[18] Hlth Res & Educ Inst, Honolulu, HI USA
[19] Tufts Univ, Sch Med, Boston, MA 02111 USA