Harmonization of maternal balanced energy-protein supplementation studies for individual participant data (IPD) meta-analyses – finding and creating similarities in variables and data collection. - Gernand, Alison D.; Gallagher, Kelly; Bhandari, Nita; Kolsteren, Patrick; Lee, Anne CC; Shafiq, Yasir; Taneja, Sunita; Tielsch, James M.; Abate, Firehiwot Workneh; Baye, Estifanos; Berhane, Yemane; Chowdhury, Ranadip; et al. (BMC Pregnancy & Childbirth, 2023)