Angelak, A., Kalali, D., Chantzara, C., Faiq, L., Gad, M., Kadłubek, S., Kamiński, J., Charalampidi, Z., Charalampidis, C. and Anestakis, D. (2025) “Detection of gastrointestinal cancers using salivary biomarkers – a systematic review”, European Journal of Clinical and Experimental Medicine, 23(3), pp. 750–766. doi: 10.15584/ejcem.2025.3.11.