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Nicoline Jochmann,
Mario Lorenz,
Amélie von Krosigk,
Peter Martus,
Volker Böhm,
Gert Baumann,
Karl Stangl
and Verena Stangl
(2008).
The efficacy of black tea in ameliorating endothelial function is equivalent to that of green tea. British Journal of Nutrition,
99
,
pp 863-868
doi:10.1017/S0007114507838992