a Ankara Numune Hospital
b Dokuz Eylül University Faculty of Medicine
c Hacettepe University Faculty of Medicine
d Istanbul University Faculty of Medicine
e Ondokuz Mayis University Faculty of Medicine
f A. Ü. bn-i Sina Hospital
g Selçuk University Faculty of Medicine
h Akdeniz University Faculty of Medicine, Turkey
Address d was incorrect in the published paper. The corrected address list is reproduced above. The authors would like to apologise for any embarrassment this error may have caused.