1. University of Massachusetts Medical School and Barre Family Health Center, Barre, and CleanSlate Research and Education Foundation, Florence, Massachusetts (S.A.M.)
2. University of Massachusetts Amherst College of Nursing, Amherst, and CleanSlate Research and Education Foundation, Florence, Massachusetts (L.M.C., J.D.B.)
3. CleanSlate Research and Education Foundation, Florence, Massachusetts (A.W.)