“Supplementum 231: Joint Congress of the Swiss Society of Rheumatology SSR and the Swiss Society for Allergology and Immunology SSAI (Interlaken, Switzerland, August 30-31, 2018)”. Swiss Medical Weekly, vol. 148, no. 3536, Aug. 2018, p. Suppl. 231, https://doi.org/10.4414/smw.2018.20433.