Authors: Georgi Tchernev; Julian Ananiev; José Carlos Cardoso; Uwe Wollina; Shyam B Verma; James W Patterson; Lyubomir A Dourmishev; Michael Tronnier; Hiroyuki Okamoto; Kana Mizuno; Nobuo Kanazawa; Maya Gulubova; Irena Manolova; Cristina Salaro Journal: Wien Klin Wochenschr Date: 2012-04-14 Impact factor: 1.704