Correction to: Worldwide literature on epidemiology of human alveolar echinococcosis: a systematic review of research published in the twenty-first century
1 Department of Internal Medicine I, Ulm University Hospital, Albert-Einstein-Allee 23, 89081, Ulm, Germany.
2 Department of Diagnostic and Interventional Radiology, Ulm University Hospital, Albert-Einstein-Allee 23, 89081, Ulm, Germany.
3 Xinjiang Medical University, First Affiliated Hospital, WHO Collaborating Centre on Prevention and Care Management of Echinococcosis, Urumqi, 830000, Xinjiang Uyghur Autonomous Region, People's Republic of China.
4 Qinghai University Affiliated Hospital, Qinghai University, Xining, 810001, Qinghai, People's Republic of China.
5 Department of Internal Medicine I, Ulm University Hospital, Albert-Einstein-Allee 23, 89081, Ulm, Germany. wolfgang.kratzer@uniklinik-ulm.de.