Recent Developments in the Delivery of Integrated Medical and Nursing Care for Elderly Parents Bereaved of Their Only Child 
XU Cai-ming,RONG Chao,TAN Jian-gang*
Chinese General Practice . 2018, (16): 1932 -1937 .  DOI: 10.3969/j.issn.1007-9572.2018.16.006