[1] Univ Massachusetts, Med Sch, Dept Populat & Quantitat Sci, Worcester, MA 01605 USA
[2] Univ Massachusetts, Med Sch, Grad Sch Nursing, Worcester, MA 01605 USA
[3] Univ Massachusetts, Med Sch, Dept Obstet & Gynecol, UMass Mem Hlth Care, Worcester, MA 01605 USA
[4] Univ Massachusetts, Med Sch, Dept Pediat, Worcester, MA 01605 USA
[5] Univ Massachusetts, Med Sch, Dept Psychiat, Worcester, MA 01605 USA
[6] Yale Univ, Sch Med, Div Gen Internal Med, New Haven, CT USA
[7] VA Connecticut Healthcare Syst, Pain Res Informat Multimorbid & Educ Ctr, West Haven, CT USA
[8] VA Cent Western Massachusetts, Res & Dev, Leeds, MA USA