未登录Reproducibility and relative validity of a semi-quantitative food frequency questionnaire for Chinese pregnant women
Zhang, Hongmin; Qiu, Xiang; Zhong, Chunrong; Zhang, Kewei; Xiao, Mei; Yi, Nianhua; Xiong, Guoping; Wang, Jing; Yao, Jing; Hao, Liping; Wei, Sheng; Yang, Nianhong; Yang, Xuefeng
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