Carl O Helvie, R.N., Dr.P.H. is a registered nurse with a doctorate in Public Health (Johns Hopkins) and over sixty years’ experience as a nurse practitioner, educator, author and researcher. He has published eight books and chapters in four additional ones, and published 40 articles, presented over 55 research papers internationally and 60 papers for lay groups. Some of his books resulted from his development and over 35 years refinement of...