120
Participants
Start Date
April 4, 2023
Primary Completion Date
November 16, 2024
Study Completion Date
November 16, 2024
The nitrogen isotope
The nitrogen mass-charge ratio abundances (NMAs) and NMA ratios (NMARs) The nitrogen components of various m/z values in oral gas were detected.
Clinical Research Centre, The Seventh Affiliated Hospital, Shenzhen
Hepatopancreatobiliary Surgery Institute of Gansu Province, Lanzhou
Wuwei Tumor Hospital, Wuwei
Hepatopancreatobiliary Surgery Institute of Gansu Province
OTHER