[1] Med Univ Vienna, Vienna, Austria
[2] Univ Hosp Salzburg, Salzburg, Austria
[3] Hosp Barmherzige Schwestern Linz, Linz, Austria
[4] Med Univ Graz, Graz, Austria
[5] Hosp Wr Neustadt, Wr Neustadt, Austria
[6] Paracelsus Univ Salzburg, Salzburg, Austria
[7] Med Univ Vienna, Gen Hosp, Vienna, Austria
[8] Hanusch Med Ctr, Vienna, Austria