Inhibition of cholinesterase activity by extracts, fractions and compounds from Calceolaria talcana and C. integrifolia (Calceolariaceae: Scrophulariaceae) - Cespedes, C L; Muñoz, E; Salazar, J R; Yamaguchi, L; Werner, E; Alarcon, J; Kubo, I (Food Chem Toxicol, 2013)