El Fuad, T.M., Gea, E., Yael, C. and Lubis, M. 2019. Patterns of Acid Base Balance and Plasma Electrolyte Concentrations in Post Surgical Digestive Patients. Paediatrica Indonesiana. 33, 7-8 (Jan. 2019), 173-81. DOI:https://doi.org/10.14238/pi33.7-8.1993.173-81.