David (Professor Emeritus in Dermatology University of Sheffield Royal Hallamshire Hospital Sheffield UK) Gawkrodger, Michael R. (Associate Professor and Consultant Dermatologist U Ardern-Jones
David J. (Professor <br>Department of Physical Therapy<br>Faculty of Rehabilitation Medicine<br>University of Alberta<br>Edmonton Alberta Canada) Magee, Robert C. (Professor and Chair Depa Manske