Dr. Harold Klawans was a professor of neurological sciences and pharmacology at Rush-Presbyterian-St. Luke's Medical Center in Chicago, Dr. Klawans was an expert in Parkinson's disease and other movement disorders and founded the Movement Disorder Clinic at Rush.

He was president of the United Parkinson Foundation, a Chicago-based group that supports research in Parkinson's disease and related disorders, a pioneer in the use of L-dopa to treat Parkinson's disease and the author of more than 400 medical articles.

Dr. Klawans' fame did not end in the medical field. In the 1980s, he launched a successful career as a mystery writer with his first novel, "Sins of Commission," which became a Book of the Month Club alternate selection.

He published three more mystery stories and other books detailing case histories of neurological disorders, and he was praised by critics for making complex scientific analyses of infirmities compelling and understandable to the ordinary reader.

[(Source)][1]


[1]: http://articles.chicagotribune.com/1998-04-01/news/9804010093_1_neurology-dr-harold-klawans-disorders