80
Participants
Start Date
May 31, 2012
Primary Completion Date
June 30, 2013
Study Completion Date
June 30, 2013
Vapocoolant spray
The Vapocoolant spray containing alkane is applied for 20 seconds.
Water spray
This spray is covered so the patient and the investigator can not find the spray type out.
Imam Khomeini hospital complex, Tehran
Tehran University of Medical Sciences
OTHER