A summary of the five comparison groups of breast cancers used in this study.

a Sample size for these class are too small (b Fisher’s exact tests have been conducted in order to check the distribution difference of Mexican and Vietnam patients in each comparison group. Only ER comparison group has significantly different race composition (pc 25 of the patients in Grade II are all Mexican patients, compared to 13 Mexican patients and 13 Vietnamese Patients in Grade III. Therefore, we excluded 13 Samples from Vietnam Grade III patients and the sample sizes of Grade II vs. Grade III used in this study (all Mexican patients), are 25 and 13 respectively. The reported fisher’s exact test statistics for this comparison group is also based on the exclusion of Vietnam patient samples.A summary of the five comparison groups of breast cancers used in this study.