[1] Univ Colorado, Hlth Sci Ctr, Dept Med, Denver, CO 80262 USA
[2] Johns Hopkins Sch Med, Dept Med, Baltimore, MD USA
[3] Roxborough Pediat, Philadelphia, PA USA
[4] Univ Calif San Francisco, Dept Pediat, San Francisco, CA USA
[5] Univ Calif Los Angeles, Dept Med, Los Angeles, CA 90024 USA
[6] N Cty Community Healthcare, Flagstaff, AZ USA
[7] Univ Penn, Sch Med, Div Gen Internal Med, Philadelphia, PA 19104 USA
[8] Case Western Reserve Univ, Sch Med, Dept Pediat & Adv Pediat, Cleveland, OH USA
[9] Natl Phys Alliance, Washington, DC USA
[10] Case Western Reserve Univ, Sch Med, Dept Family Med, Cleveland, OH 44106 USA
[11] Stanford Univ, Sch Med, Geriatr Educ Ctr, Stanford, CA 94305 USA
[12] Cent Maine Med Ctr, Family Med Residency Program, Lewiston, ME USA
[13] Brown Univ, Warren Alpert Med Sch, Dept Family Med, Providence, RI 02912 USA
[14] Univ Connecticut, Sch Med, Farmington, CT USA
[15] Univ Maryland, Sch Med, Dept Family & Community Med, Baltimore, MD 21201 USA
[16] Linda Vista Family Hlth Ctr, Dept Pediat, San Diego, CA USA