Figure 1.

Flow diagram of selection of articles for inclusion* *N = number of studies. aThese numbers add up to more than 40 because most studies assessed more than one psychological well-being state. bThese numbers add up to more than 21 because most studies assessed more than one psychological well-being state.

Wang et al. BMC Complementary and Alternative Medicine 2010 10:23   doi:10.1186/1472-6882-10-23
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