Association between calcium supplementation and blood pressure among pregnant women aged 30 years and older in Chengdu. - CHEN, Lu; LIU, Xue-ting; LIAO, Wen-huan; WANG, Xiao-yu; CHENG, Zhi-bao; XU, Yu-jie; GAO, Yi-xing; XIONG, Jing-yuan; GONG, Yun-hui; CHENG, Guo (Modern Preventive Medicine, 2026)