
I would like to know what is the method applied in the States for the ( look at the red phrase ) :
"The focus of this article and much of Dr. Cheney's current work is based on the following publication: "Abnormal Impedance Cardiography Predicts Symptom Severity in Chronic Fatigue Syndrome." Peckerman, et al; The American Journal of the Medical Sciences. 2003; 326(2):55-60.
Thanks for your kindness !
Luisa
