title: In memory of Helen Laburn and Claus Jessen.
abstract: It is with great sadness that we report the passing of our dear colleagues: Professor Helen Laburn and Professor Claus Jessen. We will always remember them.
authors.affiliation: Brain Function Research Group; School of Physiology; Faculty of Health Sciences; University of the Witwatersrand ; Johannesburg, South Africa.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fuller
authors.affiliation: Department of Physiology; College of Medicine; University of Tennessee Health Science Center ; Memphis, TN USA.
authors.forename: Clark M
authors.initials: CM
authors.lastname: Blatteis
keywords: Thermoregulation; history; obituary; thermal biology; thermal medicine