Disease Severity in Never Smokers, Ex-Smokers, and Current Smokers With Axial Spondyloarthritis: Results From the Scotland Registry for Ankylosing Spondylitis

ACKNOWLEDGEMENTS We would like to thank all the clinicians and research nurses who facilitated recruitment and data collection. In particular we would like to thank the SIRAS steering committee, especially Professor Roger Sturrock (chair) and Dr David Marshall (vice-chair). We would also like to thank the SIRAS coordinating centre study team, in particular Elizabeth Jones, Giles O’Donovan, Nabi Moaven-Hashemi and Flora Joyce. GTJ, GJM and FA conceived of the study. The initially analysis was undertaken by TR, under the supervision of GTJ and LED. GTJ produced the first draft of the manuscript and all authors have provided intellectual input into its revision. Funding SIRAS was funded by unrestricted grant from Pfizer and AbbVie.