Table 1.

Summary of patient cohorts.

Research group	NW	UCLA	Michigan	Stanford	UAB	Total
Healthy control	25	35	37	19	12	128
Positive control	10	32	17	10	0	69
Fibromyalgia	x	x	x	x
IBS	x	x	x	x
CFS	x		x
UCPPS	24	33	34	24	17	132
Total	59	100	88	53	29	329