中国计划生育学杂志
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The investigation of knowledge, attitude and behavior for physical activity during pregnancy of pregnant women
1. School of Public Health, Peking University, Beijing, 100191; 2. Haidian District Maternal and Child Health Care Hospital of Beijing; 3. Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health, National Health and Family Planning Commission of the People's Republic of China, Peking University