At the time of the study, Caterina Hill was with the Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA. David Zurakowski was with Children's Hospital, Boston, MA. Jennifer Bennet and Rainelle Walker-White were with the Family Van, Boston, MA. Jamie L. Osman was with the Harvard School of Public Health. Aaron Quarles was with the Harvard Medical School. Nancy Oriol was with the Beth Israel Deaconess Medical Center, Boston, MA.