Author Correction: Structure of two purple pigments, catechinopyranocyanidins A and B from the seed-coat of the small red bean, Vigna angularis. - Yoshida K; Nagai N; Ichikawa Y; Goto M; Kazuma K; Oyama KI; Koga K; Hashimoto M; Iuchi S; Takaya Y; Kondo T (Scientific reports, 2019)