Liu, X., Guo, D., Li, X., Guo, Y. and Song, W. 2021. Value of combined detection of PCA, ANCA, ASCA, AGA and ANA in early diagnosis of Gastrointestinal Diseases. Pakistan Journal of Medical Sciences. 38, 1 (Nov. 2021). DOI:https://doi.org/10.12669/pjms.38.1.4682.