In the original published version of this article, some sentences need to be modified. This now has been corrected to:
-
(1)
In the fifth line (PDF file) of Paragraph 3 in Section 5.1, the correct sentence should be “The direct effect of DC on GIP makes up 47.113 % of the total effect, while the indirect effect accounts for 52.887 %."
-
(2)
In the tenth line (PDF file) of Paragraph 1 in Section 6, the correct sentence should be “The direct and indirect effects of DC on GIP accounted for 47.113 % and 52.887 % of the total effect respectively."
The authors apologize for this error. Both the HTML and PDF versions of the article have been updated to correct the error.
