Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Juan Wang and Zhongheng Zhang and Haoyang Zhang and Pablo Cardinal-Fernández and Alberto Alexander Gayle,Comparing baseline characteristics between groups: an introduction to the CBCgrps package,Annals of Translational Medicine,2305-5839,AME Publishing Company,2017-12-01,,,484-484,https://cir.nii.ac.jp/crid/1874242817632117760,https://doi.org/10.21037/atm.2017.09.39