Erratum to: SpringerPlus (2015) 4:472 DOI 10.1186/s40064-015-1274-2

It has come to our attention that during the production of the original article (Acar et al. 2015), the name of the second author, Esin Ozturk-Isik, was spelt as Esin Öztürk Işık, which is incorrect and differs from how her name appears in previously published work. The publisher apologises for any inconvenience caused by this.