Erratum Nasser Al-Daghri, King Saud University 26 September 2013 Author name: Khalid M. Alkhrafy should be Khalid M. Alkharfy Competing interests I declare no competing interest.
Erratum
26 September 2013
Author name: Khalid M. Alkhrafy should be Khalid M. Alkharfy
Competing interests
I declare no competing interest.