| Affiliation: | 1. The Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine at Dartmouth, , Lebanon, New Hampshire 03766, U.S.A.;2. Department of Sociology, Center for Demography and Ecology, University of Wisconsin‐Madison, , Madison, Wisconsin 53706, U.S.A.;3. Department of Psychiatry, Massachusetts General Hospital, , Boston, Massachusetts 02114, U.S.A.;4. Department of Health Care Policy, Harvard Medical School, , Boston, Massachusetts 02115, U.S.A.;5. Department of Sociology, Yale Institute for Network Science, Yale University, , New Haven, Connecticut 06520, U.S.A. |
