TY  - GEN
AU  - Zhang,Bin
AU  - Zhang,Yuqing
TI  - Mann-Whitney U test and Kruskal-Wallis test should be used for comparisons of differences in medians, not means: comment on the article by van der Helm-van Mil et al
SN  - 0004-3591
PY  - 2009///0630
KW  - Statistics, Nonparametric
N1  - Publication Type: Comment; Letter
UR  - https://doi.org/10.1002/art.24497
ER  -