title: Reply to Commentary Letter by Dr. Melvin Khee Shing Leow.
authors.affiliation: Department of Physiology, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada. Electronic address: Andrea.constantinof@mail.utoronto.ca.
authors.forename: Andrea
authors.initials: A
authors.lastname: Constantinof
authors.affiliation: Department of Physiology, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada.
authors.forename: Vasilis G
authors.initials: VG
authors.lastname: Moisiadis
authors.affiliation: Department of Physiology, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada.
authors.forename: Stephen G
authors.initials: SG
authors.lastname: Matthews