Focus Group Discussions with Young Males, Shift Workers, and Shift Work Supervisors
Toben F. Nelson, M.S.
Nancy E. Isaac, Sc.D.
John D. Graham, Ph.D.
Harvard School of Public Health
the National Highway Traffic Safety Administration
under Agreement No. DTNH22-96-H-05307
Note: The opinions, findings and conclusions expressed in this document are those of the authors and do not represent those of the National Highway Traffic Safety Administration.