ULTRASOUND-GUIDED MINIMALLY INVASIVE PROCEDURES AMONG ELDERLY AND SENILE PATIENTS WITH ACUTE CALCULOUS CHOLECYSTITIS СтатьяLitinsky Alexander, Ivanov Vladimir, Berisha Adonis, Popov Vasily, Davidyan Tigran, Khurmatulina ElinaSCIENCE4HEALTH 2018. 2018. 184 с.