TY JOUR TI ORGAN-PRESERVING PRINCIPLE IN THE SURGERY FOR CHRONIC PANCREATITIS IN CASE OF OPEN STENTING OF THE PANCREATIC DUCT KW chronic pancreatitis KW pancreatic duct KW stenting KW resection KW pancreatojejunoanastomosis JO Medical Bulletin of the Ministry of Internal Affairs AU PEREHODOV, S.N. AU ZABELIN, M.V. AU ZVOL'SKAYa, N.M. AU ZUBRICKIY, V.F. PY 2025 IS 2025 PB State institution Joint editorial office of the Ministry of Internal Affairs of Russia