The Comfort and Effectiveness of Hearing Protection DevicesArezes, P. M.Miguel, A. S.Author informationHuman Engineering Group, Department of Production and Systems, School of Engineering of the University of Minho, 4800-058 Guimaraes, PortugalReceived 6 January 2003Annals of Occupational Hygiene 47(4):p 338, June 2003.Copyright © Copyright Oxford University Press 2003.