2015, Physiological and psychological effects of forest therapy on middle-aged males with high-normal blood pressure

Ochiai H, Ikei H, Song C, Kobayashi M, Takamatsu A, Miura T, Kagawa T, Li Q, Kumeda S, Imai M, Miyazaki Y

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https://www.ncbi.nlm.nih.gov/pubmed/25809507