232 Chapter 9 Preferences of Sjögren’s syndrome patients regarding potential new saliva substitutes All the authors (Z. Assy, F.J. Bikker, E. Mashhour, M. Asadi, H.S. Brand) contributed to the conception and design of the study. Material preparation, data collection, and analysis were performed by Z. Assy, E. Mashhour, and M. Asadi. The first draft of the manuscript was written by Z. Assy, and all the authors commented on successive versions of the manuscript. All the authors read and approved the definitive manuscript
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