RESULTS OF X-RAY FLUORESCENCE SPECTRAL ANALYSIS OF MIXED SALIVA SAMPLES IN PATIENTS WITH COMORBIDITY saliva, macroelements, X-ray fluorescence analysis, comorbidities N. Dukhovskaya , I. Ostrovskaya , Т. Vavilova , О. Rubtsova https://doi.org/10.54890/1694-6405_2022_2_