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Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsCharles L. SigmundJoe Kerkvliet is an associate professor of economics at Oregon State University (e-mail: kerkvlij@ucs.orst.edu). Charles L. Sigmund is with the Office for Oregon Health Plan Policy and Research.
Kerkvliet et al. (Fri,) studied this question.