CORRECTION Philippos Karipidis, Alexander Technological Educational Institute of Thessaloniki 12 May 2015 On table 2 -line 9th -column 6th replace 1,13 with 0,62 Competing interests None declared
CORRECTION
12 May 2015
On table 2 -line 9th -column 6th replace 1,13 with 0,62Competing interests
None declared