Correspondence to: Marius Trøseid, MD, PhD, Research Institute of Internal Medicine, Oslo University Hospital, 0372 Oslo, Norway. Email

E-mail Address: [email protected]

https://orcid.org/0000-0001-7775-3404

Research Institute of Internal Medicine, Oslo University Hospital, Norway. (J.R.H., M.T.)

Section for Clinical Immunology and Infectious Diseases, Oslo University Hospital, Norway. (M.T.)

Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Norway (J.R.H., M.T.).