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Kvikstad, Vebjørn, Ok Målfrid Mangrud, Einar Gudlaugsson, Ingvild Dalen, Hans Espeland, Jan P. A. Baak, ja Emiel A. M. Janssen. "Prognostic Value and Reproducibility of Different Microscopic Characteristics in the WHO Grading Systems for PTa and PT1 Urinary Bladder Urothelial Carcinomas." Diagn Pathol 2019.

Kvikstad, Vebjørn, et al. "Prognostic Value and Reproducibility of Different Microscopic Characteristics in the WHO Grading Systems for PTa and PT1 Urinary Bladder Urothelial Carcinomas." Diagn Pathol 2019.