Jabbary Moghaddam, Morteza Effects of clonidine premedication upon postoperative shivering and recovery time in patients with and without opium addiction after elective leg fracture surgeries. [electronic resource] - Anesthesiology and pain medicine 2013 - 107-10 p. digital Publication Type: Journal Article ISSN: 2228-7523 Standard No.: 10.5812/aapm.7143 doi