00526naa#a2200181#i#450# EN\\bibl\15394 20241003152231.4 2409-3750 20170210b2017####ek#y0engy0150####ca RUS RU SEPARATION OF THE CHORD OF THE MITRAL VALVE Journal article Tula LLC Information and publishing center Innovations and investments 2017 0 с. Journal article local Kinyasheva Natalya Androsova M. zh-szf.ru