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Zohdy, Marwa; Cazzaniga, Simone; Nievergelt, Helga; Blum, Roland; Suter, Valérie G. A.; Feldmeyer, Laurence; Beltraminelli, Helmut (2021). Inter-Observer and Intra-Observer Variations in the Assessment of Epithelial Dysplasia in Oral Lichenoid Diseases. Dermatopathology, 8(2), pp. 84-88. MDPI 10.3390/dermatopathology8020013
Hoppe, Hanno; Spagnuolo, Sara; Froehlich, Johannes M; Nievergelt, Helga; Dinkel, Hans-Peter; Gretener, Silvia; Thoeny, Harriet C (2010). Retrospective analysis of patients for development of nephrogenic systemic fibrosis following conventional angiography using gadolinium-based contrast agents. European radiology, 20(3), pp. 595-603. Berlin: Springer-Verlag 10.1007/s00330-009-1586-0
Boudny, Clara; Nievergelt, Helga; Braathen, Lasse R; Simon, Dagmar (2007). Wegener's granulomatosis presenting as pyoderma gangrenosum. Journal der Deutschen Dermatologischen Gesellschaft, 6(6), pp. 477-479. Berlin: Blackwell 10.1111/j.1610-0387.2007.06497.x
