FHL2 and idiopathic pulmonary fibrosis: Focusing on the genes that belong to the four modules, we examine on MMP7 [32,44,50], LTBP1 [20], FHL2 [1], CXCL2 [42], THY1 [39] and AGER [17] to confirm whether or not these are associated with IPF (See Additional file 1: Table S3).