Kathleen Costello, Rosalind Kalb, Barbara S. Giesser, Can Do Multiple Sclerosis) Costello, Kathleen (Chief Operating Officer, Chief Operating Officer, Can Do Multiple Sclerosis) Kalb, Rosalind (Senior Programs Consultant, Senior Programs Consultant, Los Angeles) Giesser, Barbara S., MD. (Professor Emeritus of Clinical Neurology, Professor Emeritus of Clinical Neurology, University of California, Barbara S Giesser