The GLI software packages are to be used for research, education, training and validation of implementation in software, and not for use in patient treatment. For treatment/diagnostic purposes, please use the GLI reference equations as implemented by medical device companies.
Stanojevic S, Wade A, Stocks J, et al. Reference ranges for spirometry across all ages. A new approach. Am J Respir Crit Care Med 2008; 177: 253–260.
Quanjer PH, Stanojevic S, Cole TJ, et al. and the ERS Global Lung Function Initiative. Multi-ethnic reference values for spirometry for the 3-95 years age range: the Global Lung Function 2012 equations. Eur Respir J 2012; 40: 1324-1343.