Edwards, Chelsea L.Kaplan, Alan G.Yawn, Barbara P.Kocks, Janwillem W. H.Bulathsinhala, LakminiCarter, Victoria A.Chang, Ku-LangFox, ChesterGopalan, GokulHan, MeiLan K.Kruszyk, MajaLe Lievre, Chantal E.Mahle, CathyMake, BarryPace, Wilson D.Price, ChrisShaikh, AsifSkolnik, NeilPrice, David B.2021-07-132021-07-132021-01Edwards, C L, Kaplan, A G, Yawn, B P, Kocks, J W H, Bulathsinhala, L, Carter, V A, Chang, K-L, Fox, C, Gopalan, G, Han, M K, Kruszyk, M, Le Lievre, C E, Mahle, C, Make, B, Pace, W D, Price, C, Shaikh, A, Skolnik, N & Price, D B 2021, 'Development of the Advancing the Patient Experience (APEX) in COPD Registry : A Modified Delphi Study', COPD: Journal of Chronic Obstructive Pulmonary Disease, vol. 8, no. 1, pp. 135-151. https://doi.org/10.15326/jcopdf.2020.01541541-2555https://hdl.handle.net/2164/16816Funding statement: APEX COPD is conducted by Optimum Patient Care (OPC) Global Limited, and co-funded by OPC Global and Boehringer Ingelheim Pharmaceuticals, Inc. (BIPI). The author(s) meet criteria for authorship as recommended by the International Committee of Medical Journal Editors (ICMJE). The authors received no direct compensation related to the development of the manuscript. Writing, editorial support, and/or formatting assistance was provided by Ms. Audrey Ang of the Observational and Pragmatic Research Institute, Singapore, and Dr. Lisa Buttle of Medscript Ltd, Ireland, which was funded by BIPI. BIPI was given the opportunity to review the manuscript for medical and scientific accuracy as well as intellectual property considerations. Acknowledgments The author(s) meet criteria for authorship as recommended by the International Committee of Medical Journal Editors (ICMJE). We thank Dr. Alvaro Aranda (Hospital Auxilio Mutuo, San Juan, Puerto Rico) for his scientific and clinical contributions during the drafting of this manuscript. We also thank Ms. Audrey Ang for editorial assistance, Ms. Bronte Sawyer for project coordination, and Dr. Lisa Buttle for assistance with drafting the article. Dr. Ruth B. Murray is acknowledged for her substantial contribution to the interpretation, summarization and presentation of data in this article and significant intellectual input to the manuscript. She has provided her final approval of the version to be published and agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. Dr. Ruth B. Murray is the founder and director of Medscript Ltd., a company that provided writing and editorial support for APEX COPD publications.17792844engprimary carepatient reported outcomesresearchclinically relevant data collectionregistryPatient-reported outcomesRegistryResearchPrimary careClinically relevant data collectionUNITED-STATESDIAGNOSISpatient-reported outcomesMANAGEMENTADULTSAMERICAN-COLLEGELUNG-FUNCTIONSOCIETYOBSTRUCTIVE PULMONARY-DISEASECLINICAL-PRACTICE GUIDELINER Medicine (General)Pulmonary and Respiratory MedicineR1Journal article10.15326/jcopdf.2020.0154http://www.scopus.com/inward/record.url?scp=85097867260&partnerID=8YFLogxK81