title: Reply to Ustundag et al.
authors: H H
authors: HH
authors: Lutz
authors: J J W
authors: JJ
authors: Tischendorf
mesh_terms: D015209:Cholangitis, Sclerosing / Q000000981:diagnostic imaging*; D019160:Endosonography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male