AOAC SMPR® 2017.003:Standard Method Performance Requirements (SMPRs) for Quantitation of Proanthocyanidin Content in Cranberry Fruit, Juice, Beverage, Dried Cranberry, Cranberry Sauce, Ingredients (Concentrates, Extracts, and Powders), and Dietary Supplement Formulations. (22nd November 2019) - Schaneberg, Brian T; Brown, Paula N; Bzhelyansky, Anton; Chang, Tony; Cunningham, David; Gu, Liwei; Haesaerts, Gunther; Howell, Amy; Johnson, Holly E; Konings, Erik J M; Krueger, Christian; Liu, Haiyan; et al.