. 2015 Feb 13;10(2):e0117360. doi: 10.1371/journal.pone.0117360
© 2015 Zheng et al
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
Fig 15. Tai Chi versus Non-intervention: Stair Test Index.
