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. 2021 Apr 21;11:8676. doi: 10.1038/s41598-021-87860-1

Figure 1.

Figure 1

Study algorithm on enrollment of the subjects, Nha Trang, Vietnam, 2009–2012. This figure represents the study algorithm on enrollment of the subjects. I. During the birth phase period in May, 2009–May, 2010, a total of 3,173 mothers living in 16 target communes in Nha Trang delivered at either the Khanh Hoa General Hospital and commune health centers. Of them, 2,787 (87.8%) delivered at the hospital and 1,987 (62.6%) mothers and their 1,987 newborn babies were enrolled under the criteria. II. During the 2-year follow-up phase period in May, 2011–May, 2012, among these 1,987 neonates enrolled in the birth phase, 1,339 (67.4%) children who reached 2 years of age were enrolled under the criteria.