@article{Vikstrom2011,
author = {Josefin Vikstrom and Marie Bladh and Mats Hammar and Jan Marcusson and Ewa Wressle and Gunilla Sydsjo},
title = {The influences of childlessness on the psychological well-being and social network of the oldest old.},
journal = {BMC Geriatrics},
year = {2011},
month = {Nov},
volume = {11},
doi = {10.1186/1471-2318-11-78.},
url = {http://www.ncbi.nlm.nih.gov/pubmed/22111700},
}