Rosdahl, A.* et al. An extra priming dose of hepatitis A vaccine to adult patients with rheumatoid arthritis and drug induced immunosuppression - A prospective, open-label, multi-center study (vol 21, pg 43, 2018). Travel Med. Infect. Dis. 27, 115-115 (2019) Rosdahl, A.* et al. An extra priming dose of hepatitis A vaccine to adult patients with rheumatoid arthritis and drug induced immunosuppression - A prospective, open-label, multi-center study. Travel Med. Infect. Dis. 21, 43-50 (2017)