For citations:
Selyanina N.V., Karakulova Yu.V., Khegai O.V. Parkinson’s disease — the association of non-motor signs with gastrointestinal disorders and serum galanin levels. Experimental and Clinical Gastroenterology. 2020;(8):78-82. (In Russ.) https://doi.org/10.31146/1682-8658-ecg-180-8-78-82