Brazilian Green Propolis Prevents Cognitive Decline into Mild Cognitive Impairment in Elderly People Living at High Altitude.

Zhu A, Wu Z, Zhong X, Ni J, Li Y, Meng J, Du C, Zhao X, Nakanishi H, Wu S

J Alzheimers Dis. 2018; 63(2):551-560. PMID: 29630549. Abstract