Before revision:  This paper presents a proof of concept to encourage controlled clinical trials and serves as a call for labeled cough data  . AI4COVID-19 is not designed to compete with clinical testing .
After revision:  This paper presents a proof of concept to encourage controlled clinical trials and serves as a call for labeled cough data to gauge the generalization capability of AI4COVID-19 . AI4COVID-19 is not designed to compete with clinical testing .