1. Food Research Division, Address Locator 2203D, and Bureau of Biostatistics and Computer Applications, Address Locator 2203E, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada K1A 0L2; Potato Processing Technology Centre, McCain Foods Limited, Florenceville, New Brunswick, Canada E7L 3K5; and McCain Foods (Canada), Florenceville, New Brunswick, Canada E7L 1B2