Sinlapamongkolkul, P.; Pusongchai, T.; Buaboonnum, J.; Satayasai, W.; Surapolchai, P. Diagnostic Utility of Reticulocyte Hemoglobin Equivalent for Identifying Iron Deficiency in Hospitalized Children in a Thalassemia-endemic Region: A Single-center Cross-sectional Study. Siriraj Med J 2026, 78, 68-78.