Karlsson, NiklasAtkinson, Mark J.Müllerová, HanaKeen, ChristinaHughes, RodJanson, ChristerMake, BarryPrice, DavidReddel, Helen K.NOVELTY study investigators2021-09-142021-09-142021Karlsson, N, Atkinson, M J, Müllerová, H, Keen, C, Hughes, R, Janson, C, Make, B, Price, D, Reddel, H K & NOVELTY study investigators 2021, 'Validation of a diagnosis-agnostic symptom questionnaire for asthma and/or COPD', ERJ Open Research, vol. 7, no. 1, 00828-2020. https://doi.org/10.1183/23120541.00828-20202312-0541https://hdl.handle.net/2164/17076ACKNOWLEDGEMENTS The authors wish to acknowledge the work of the NOVELTY study investigators, who are listed in full in the supplementary material, and Sharon MacLachlan (Evidera, London, UK), who participated in the analysis of sections of the data. Medical writing support, under the direction of the authors, was provided by Lauren McNally, MSci, CMC Connect, McCann Health Medical Communications, and was funded by AstraZeneca, Cambridge, UK, in accordance with Good Publication Practice (GPP3) guidelines (Ann Intern Med 2015; 163: 461–464). Support statement: The NOVELTY study is funded by AstraZeneca11766336engR MedicineSupplementary DataRJournal article10.1183/23120541.00828-202071