@article{Wikman2011,
author = {A. Wikman and J. Wardle and Andrew Steptoe},
title = {Quality of life and affective well-being in middle-aged and older people with chronic medical illnesses: a cross-sectional population based study. },
journal = {PLoS ONE},
year = {2011},
month = {Apr},
volume = {6},
number = {4},
url = {},
}