Consolidated Standards of Reporting Trials diagram Consolidated Standards of Reporting Trials diagram. IPF, idiopathic pulmonary fibrosis; PPI, proton pump inhibitor; CTIMP, clinical trial of an investigational medicinal product; IMP, investigational medicinal product. . Consolidated Standards of Reporting Trials diagram. IPF, idiopathic pulmonary fibrosis; PPI, proton pump inhibitor; CTIMP, clinical trial of an investigational medicinal product; IMP, investigational medicinal product. Prosenjit Dutta et al. Thorax doi:10.1136/thoraxjnl-2018-212102 Copyright © BMJ Publishing Group Ltd & British Thoracic Society. All rights reserved.