National Institutes of Health. Bilberry. The National Center for Complementary and Integrative Health (NCCIH). 2016-10-17 [2019-02-23]. (原始内容存档于2019-01-09).
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National Institutes of Health. Bilberry. The National Center for Complementary and Integrative Health (NCCIH). 2016-10-17 [2019-02-23]. (原始内容存档于2019-01-09).