Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

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Fig. 1. Flow diagram of the cohort. NICKs, National Investigation of Birth Cohort in Korea study; NHSPIC, National Health Screening Program of Infants and Children; GA, gestational age; ICU, intensive care unit; ICD, International classification of diseases; IPTW, inverse probability of treatment weighting.
J Neurogastroenterol Motil 2022;28:618~629
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