Details of correction:

Corrected text should read:

The unit of VD₃ should be changed from μg/kg to IU/kg in the whole paper including abstract, introduction, materials and methods, result (with the exception of “that is, 0, 5, 10, 20 and 40 μg/kg for 8 weeks” on page 5), discussion, table 1, table 3, table 4, figure 1, figure 3, figure 4, and figure 7.