Affiliation: | a Pacific University College of Optometry, 2043 College Way, Forest Grove, OR 97116, USA;b Oregon State Police, Oregon Drug Evaluation Classification Program, Oregon State Police Training Division, 4760 Portland Rd, N.E., Salem, OR 97305, USA;c Oregon State Police, Oregon State Police Northwest Region Headquarters, P.O. Box 406, Wilsonville, OR 97070, USA |