Intercept of minute ventilation vs. carbon dioxide output relationship in chronic obstructive pulmonary disease: utility as an index of ventilatory inefficiency

Haoyan Wang (  haoyanw@126.com ) Capital Medical University A liated Beijing Friendship Hospital https://orcid.org/0000-0003-32678396 Fang Lin Capital Medical University A liated Beijing Friendship Hospital Shan Nie Capital Medical University A liated Beijing Friendship Hospital Ranran Zhao Capital Medical University A liated Beijing Friendship Hospital Min Cao Capital Medical University A liated Chest Hospital Wei Yuan Capital Medical University A liated Beijing Friendship Hospital Yunxiao Li Capital Medical University A liated Beijing Friendship Hospital Chunting Tan Capital Medical University A liated Beijing Friendship Hospital Bo Xu Capital Medical University A liated Beijing Friendship Hospital