title: Authors' reply.
authors.affiliation: Department of Pharmacology, Anand Pharmacy College, Opp. Town Hall, Anand-388001, Gujarat, India E-mail: kavitha21_82@yahoo.co.in.
authors.forename: Kavitha S
authors.initials: KS
authors.lastname: Nair
authors.forename: Kirti V
authors.initials: KV
authors.lastname: Patel
authors.forename: Tejal R
authors.initials: TR
authors.lastname: Gandhi
references.citation: Drug Metab Dispos. 2003 Apr;31(4):439-46
references.pmid: 12642470
references.citation: Drug Metab Dispos. 2006 Oct;34(10):1742-8
references.pmid: 16837568