TY  - RPRT
TI  - Widowhood and depression: explaining long-term gender differences in vulnerability.
AU  - D Umberson
AU  - C B Wortman
AU  - R C Kessler
PY  - 1992
UR  - https://pubmed.ncbi.nlm.nih.gov/1619255/
ID  - 1619255
ER  -