Table I. Description of the subjects used for the analysis before and after application of exclusion criteria.

	N total	N male	N female	Age (mean±SD)
Initial sample before application of exclusion criteria	365	111	254	41.3±9.1
After exclusion of samples outside normal range of Red blood cells (4200~5400 cells/µl)	298	101	197	41.9±8.8
After exclusion of samples outside normal range of White blood cells (4800~10800 cells/µl)	189	73	116	41.7±8.9
After exclusion of samples outside normal range of Total Lymphocytes (1500~4000 cells/µl)	104	36	68	41.9±8.1
After exclusion of samples outside normal range of Total T Lymphocytes (1000~3200 cells/µl)	100	34	66	42.0±8.7
After exclusion of samples outside normal range of Total Th Lymphocytes (500~2200 cells/µl)	98	33	65	41.9±8.2
After exclusion of samples outside normal range of Total Tc Lymphocytes (300~1520 cells/µl)	84	28	56	41.7±8.4
After exclusion of samples outside normal range of Total B Lymphocytes (105~560 cells/µl)	78	24	54	42±8.5
Sample following inclusion/exclusion criteria	78	24	54	42±8.5

Normal ranges are as previously defined (29,30).