1916”的<ref>标签用不同内容定义了多次 Factsheet about tick-borne encephalitis (TBE). European Centre for Disease Prevention and Control. [15 January 2019]. (原始内容存档于2021-01-23)
(原始内容存档于2022-05-18) (英语). Factsheet for health professionals on monkeypox. European Centre for Disease Prevention and Control. [2022-05-22]. (原始内容存档于2022-06-20)