CCL18 and idiopathic pulmonary fibrosis: No.TGF-β1 lower in cHP vs. IPF and controlsIL-8 lower in cHP vs. controlsMMP-8, MMP-9, MCP-1, MDC, MPO and Protein-C higher in cHP vs. controlsIL-17a and IL-23, RAGE, SP-C, TIMP-1, fibronectin, eotaxin, IL-17A, IL-23, PARC, RANTES, TSLP, PlGF, FGFb, and tissue factor: no difference