Published online Jun 21, 2013. doi: 10.3748/wjg.v19.i23.3711
Revised: April 16, 2013
Accepted: May 16, 2013
Published online: June 21, 2013
Core tip: In a recent Letter to the Editor, Abadi and Kusters brought into question the validity of a study published by Rafiei et al. Herein we respond to the claims made by Abadi and Kusters, and show that the results reported in the article originally published by Rafiei et al, are valid.