The Health Effects of a Forest Environment on Subclinical Cardiovascular Disease and Heath-Related Quality of Lifehttp://journals.plos.org/plosone/article?id=10.1371/journal.pone.0103231Open Access Peer-reviewed Research Article Tsung-Ming Tsao, Ming-Jer Tsai, Ya-Nan Wang, Heng-Lun Lin, Chang-Fu Wu, Jing-