Hook-Nikanne, J., Varjonen, E., Harvima, R. and Kosunen, T. 2000. Is Helicobacter pylori infection associated with chronic urticaria?. Acta Dermato-Venereologica. 80, 6 (Nov. 2000), 425–426. DOI:https://doi.org/10.1080/000155500300012837.