Schneider KN, Theil C, Gosheger G, Lampe LP, Rödl R, Mellmann A, Kampmeier S, Rickert C. Surgeons’ non-transparent facemasks challenge the physician–patient relationship in the orthopedic outpatient clinic of a tertiary university hospital during the COVID-19 pandemic: a prospective cohort study of 285 patients. ActaO [Internet]. 2022 Jan. 3 [cited 2026 Aug. 31];93:198-205. Available from: https://scandjms.sfulib10.publicknowledgeproject.org/index.php/actao/article/view/1071