Protocol for the Redefining Maternal Anemia in Pregnancy and Postpartum (ReMAPP) study: A multisite, international, population-based cohort study to establish global hemoglobin thresholds for maternal anemia

Emily R. Smith, Zahra Hoodbhoy, Aneeta Hotwani, Fyezah Jehan, Amna Khan, Imran Nisar, Nida Yazdani, Santosh Joseph Benjamin, Anne George Cherian, Venkata Raghava Mohan, Sunitha Varghese, Balakrishnan Vijayalekshmi, Blair J. Wylie