“Supplementum 239: Annual Congress of the Swiss Society for Allergology and Immunology, jointly organised with the Viral Immunity Symposium (Lugano, Switzerland, September 5−7, 2019)”, Swiss Med Wkly, vol. 149, no. 3536, p. Suppl. 239, Aug. 2019, doi: 10.4414/smw.2019.20441.