Reason: It has come to the attention of the Editor-in-Chief of Archives of Medical Research that the mentioned article should be retracted due to similarity of content in previously published manuscripts (Pharmacol Rep., 57 (2005) 70–76 and Pharmacol Res., 50 (2004) 623–629). The Editor has asked Elsevier to retract the Devinder Singh, Vikas Chander, and Kanwaljit Chopra article for this reason.
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Pharmacology Division, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
Address reprint request to: Dr. Kanwaljit Chopra (Senior Lecturer) Pharmacology Division, U.I.P.S. Panjab University Chandigarh, 160014 India. Phone: 91-172-534105; Fax: 91-172-541142