| Recruiting | N/A | 200 | RoW | behavioral interventions | Peking University, Peking University Health Science Center-Weifang Joint Research Center for Maternal and Child Health, W.F. Maternal and Child Health Hospital, Tongzhou Maternal and Child Health-care Institution of Beijing | Gestational Weight Gain, Overweight and Obesity | 03/25 | 03/26 | | |