’ s response to reviews Title : Prognostic value of frailty in elderly patients with acute coronary syndrome : A systematic review and meta-analysis

Title: Prognostic value of frailty in elderly patients with acute coronary syndrome: A systematic review and meta-analysis Authors: Qingyu Dou (ddqqking@126.com) Wen Wang (wangwen83@outlook.com) Hui Wang (derrywang2000@hotmail.com) Yao Ma (mayao623@sina.cn) Shan Hai (haishan923@163.com) Xiufang Lin (sitaning00@163.com) Ying Liu (lycherishu@qq.com) Xinjun Zhang (alexzhang34@163.com) Jinhui Wu (wujinhui@scu.edu.cn) Birong Dong (birongdong@163.com) Version: 1 Date: 23 Jun 2019 Author’s response to reviews: Dear editor and reviewers: Thank you very much for your letter and for the reviewer’s comments concerning our manuscript entitled “Prognostic value of frailty in elderly patients with acute coronary syndrome: A systematic review and meta-analysis”. Those comments are valuable and quite helpful for revising and improving our paper. We have studied comments carefully and have made corrections which we hope to meet with approval. Revised portion is marked in blue on the paper.