the authors’ reply

sayed mohammad reza hadavi anesthesiology and critical care research center, department of anesthesiology, faghihi hospital, shiraz university of medical sciences, shiraz, iran

elaheh allahyary anesthesiology and critical care research center, department of anesthesiology, faghihi hospital, shiraz university of medical sciences, shiraz, iran

saman asadi anesthesiology and critical care research center, department of anesthesiology, faghihi hospital, shiraz university of medical sciences, shiraz, iran