Accepted Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/bjd.15898 This article is protected by copyright. All rights reserved. Article type : Original Article Optical Transfer Diagnosis Differentiating Benign and Malignant Pigmented Lesions in a Simulated Primary Care Practice a D. L. Swanson, R. V. Venneugues, S. Q. Vicencio, J. Garioch, M. Biryulina, G. Ryzhikov, B. Hamre, L. Zhao, F. S. Castellana, K. Stamnes, J. J. Stamnes Author Affiliations: Division of Clinical Dermatology (Dr Swanson), Mayo Clinic, Scottsdale, Arizona; Department of Dermatology (Drs Venneugues, Vicencio, and Garioch), Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom; Balter Medical AS (Drs Biryulina, Ryzhikov, Hamre, Zhao, K. Stamnes, and J.J. Stamnes), Bergen, Norway; Department of Physics and Technology (Drs Hamre and J.J. Stamnes), University of Bergen, Norway; Knollwood Partners (Dr Castellana), Princeton, New Jersey; and Department of Physics and Engineering Physics (Dr K. Stamnes), Stevens Institute of Technology, Hoboken, New Jersey. Drs Venneugues and Vicencio are now with Department of Dermatology, Buckinghamshire Healthcare NHS Trust, Buckinghamshire, United Kingdom. Reprints: David L. Swanson, MD, Division of Clinical Dermatology, Mayo Clinic, 13400 E. Shea Blvd, Scottsdale, AZ 85259 (swanson.david@mayo.edu).