Ageing, the Urban-Rural Gap and Disability Trends: 19 Years of Experience in China - 1987 to 2006 Peng, Xiaoxia ; Song, Shige ; Sullivan, Sheena ; Qiu, Jingjun ; Wang, Wei Abstract Publication: PLoS ONE Pub Date: August 2010 DOI: 10.1371/journal.pone.0012129 Bibcode: 2010PLoSO...512129P