Histological criteria for atypical pituitary adenomas – data from the German pituitary adenoma registry suggests modifications - Miermeister, Christian P.; Petersenn, Stephan; Buchfelder, Michael 1956-; Fahlbusch, Rudolf; Lüdecke, Dieter K.; Hölsken, Annett 1975-; Bergmann, Markus; Knappe, Hans Ulrich; Hans, Volkmar H.; Flitsch, Jörg 1971-; Saeger, Wolfgang; Buslei, Rolf 1971- (Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015)