全面二孩政策背景下安徽省中小城市30岁及以上二孩孕妇的生育意愿与心理健康状况研究
卢雪蕾,姜春晓,王苓,吴华兵,牛庆山,张驰,钟琦,黄芬
Second-birth Intentions and Mental Health among Women Aged at Least 30 in Their Second Pregnancies during the Implementation of the Universal Two-child Policy in China:a Survey in Small- and Medium-sized Cities of Anhui Province 
LU Xuelei,JIANG Chunxiao,WANG Ling,WU Huabing,NIU Qingshan,ZHANG Chi,ZHONG Qi,HUANG Fen
中国全科医学 . 2020, (11): 1406 -1410 .  DOI: 10.12114/j.issn.1007-9572.2019.00.512