Widowhood and Illness: A Comparison of Social Network Characteristics in France, Germany, Japan, and the United States von Antonucci, Toni C, Lansford, Jennifer E, Schaberg, Lynne, Smith, Jacqui, Baltes, Margret, Akiyama, Hiroko, Takahashi, Keiko, Fuhrer, Rebecca, Dartigues, Jean-Francois

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