二次妊娠孕妇产前不良情绪调查及影响因素分析
黄慧琼
Investigation on prenatal negative mood and their influencing factors in second-child pregnancy after two children policy
HUANG Huiqiong
广州医药 . 2017, (5): 81 -83 .  DOI: 10.3969/j.issn.1000-8535.2017.05.021