@article{Penning2024,
author = {Penning, M.J. and Wu, Z. and Hou, F.},
title= {Childlessness and social and emotional loneliness in middle and later life},
year = {2024},
doi = {10.1017/S0144686X22000824},
volume = {44},
number = {7},
pages = {1551--1578},
}