Hussain, R.Abid, N.B.Hussain, S.Shaukat, Z.Altaf, M.Altaf, S.Niazi, G.2015-02-162015-02-162012SpringerPlus, 2012; 1(1):10-1-10-32193-18012193-1801http://hdl.handle.net/2440/89275Letter to the editoren© 2012 Hussain et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Journal article003001591510.1186/2193-1801-1-100002094590000102-s2.0-8487349911896886