Johannes Pieter Overduin, 04-09-1969, was born in Rotterdam. His omnibus about bipolar disorder was also printed in Dutch. Since 2004 Pieter has not been experienced nuisance from his ailment. Pieter has also written short stories about the life of all day and some spiritual stories also. Besides that he also wrote a childbook. Pieter has been working for over six years in social chronic psychiatry.