Source:
Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] [Zhonghua Yu Fang Yi Xue Za Zhi] 2015 Sep; Vol. 49 (9), pp. 792-9.Publisher: Zhonghua yi xue hui Country of Publication: China NLM ID: 7904962 Publication Model: Print Cited Medium: Print ISSN: 0253-9624 (Print)