title: Author's reply.
authors.affiliation: Division of Pharmacology, Rajah Muthiah Medical College, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India.
authors.forename: Rengaraj
authors.initials: R
authors.lastname: Sivaraj
authors.affiliation: Division of Anatomy, Rajah Muthiah Medical College, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India.
authors.forename: Sivaraj
authors.initials: S
authors.lastname: Umarani
authors.affiliation: Pharmacology Unit, Faculty of Pharmacy, Asian Institute of Medicine, Science and Technology University, Bedong, Kedah, Malaysia.
authors.forename: Subramani
authors.initials: S
authors.lastname: Parasuraman
authors.affiliation: Division of Pharmacology, Rajah Muthiah Medical College, Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu, India.
authors.forename: Pyapti
authors.initials: P
authors.lastname: Muralidhar