Original Research Accepted on 04 May 2026 Gut Frailty in Chronic Heart Failure: Clinical Determinants and Distinct Microbial Signatures in Heart Failure and Transplantation Mengdie HuJiahui XiangQin PengXinyi HouYuxuan ShaoChaofeng LiYong TangYu ZhangYanyan Wang Frontiers in Cardiovascular Medicine 328 views