Authors
Stephen S. Hecht
Naylor Dana Institute for Disease Prevention, American Health Foundation, Valhalla, New York, U.S.A.
Chi-Hong B. Chen
Naylor Dana Institute for Disease Prevention, American Health Foundation, Valhalla, New York, U.S.A.
Ruth Young
Naylor Dana Institute for Disease Prevention, American Health Foundation, Valhalla, New York, U.S.A.
Dietrich Hoffmann
Naylor Dana Institute for Disease Prevention, American Health Foundation, Valhalla, New York, U.S.A.