Onuk, Sevda, et al. “Could Serum Intestinal Fatty Acid-Binding Protein and Citrulline Levels Be Predictive Markers of Mortality in Critically Ill COVID-19 Patients?”. The Journal of Infection in Developing Countries, vol. 19, no. 07, July 2025, pp. 1024-9, doi:10.3855/jidc.20862.