{{Cite journal| doi = 10.1186/s12909-021-02526-w| issn = 1472-6920 (Electronic) 1472-6920 (Linking)| volume = 21| issue = 1| pages = 123| last1 = Schertel| first1 = A.| last2 = Geiser| first2 = T.| last3 = Hautz| first3 = W. E.| title = Man or machine? Impact of tutor-guided versus simulator-guided short-time bronchoscopy training on students learning outcomes| journal = BMC Med Educ| date = 2021-02-24| pmid = 33618680}}