2,236
Participants
Start Date
March 1, 2019
Primary Completion Date
December 31, 2020
Study Completion Date
January 31, 2022
Breath test
Exhaled breath of each participant will be collected with air bags and directly detected by a high-resolution high-pressure photon ionization time-of-flight mass spectrometry (HPPI-TOFMS).
Peking University People's Hospital, Beijing
Beijing Haidian Hospital
OTHER
Aerospace 731 Hospital
OTHER
Beijing Breatha Biological Technology Co., Ltd, Beijing
UNKNOWN
The First Affiliated Hospital of Zhengzhou University
OTHER
Jiangsu Cancer Institute & Hospital
OTHER
Peking University People's Hospital
OTHER