R725.6 The value of expiratory time constant in routine ventilatory pulmonary function test in school ⁃ aged chil⁃ dren 

ZHANG Yanli, WANG Xiao, SU Aifang, DAI Fuli, WANG Xiufang, ZHANG Yan, ZHENG Yuehong, CAI Chunling, SHI Hongke.
The Journal of Practical Medicine . 2021, (11): 1428 -1432 .  DOI: 10.3969/j.issn.1006⁃5725.2021.11.011