Fig. 1

Number of patients with Wilson disease (WD) treated annually in outpatient clinics at German university centers subdivided into medical fields. Sixty-three departments provided data on their outpatient clinic. Most departments returning our questionnaire reported treating no (n = 8/63, 13%) or up to five (n = 28/63, 44%) WD patients in their outpatient clinic annually. Five departments reported between 21 and 30 patients, and five further departments reported more than 30 patients per year