Impact of serum Sp-a and Sp-d levels on comparison and prognosis of idiopathic pulmonary fibrosis: A systematic review and meta-analysis

AbstractBackground and objective:Idiopathic pulmonary fibrosis (IPF) has a poor prognosis in general; however, it is heterogeneous to detect relative biomarkers for predicting the disease progression. Serum biomarkers can be conveniently collected to detect and help to differentially diagnose IPF an