Acupunct Electrother Res. 1982 ; 7(2-3): 93-103.

Different releasing effects of traditional manual acupuncture and electro-acupuncture on proopiocortin-related peptides.

Nappi G, Facchinetti F, Legnante G, Parrini D, Petraglia F, Savoldi F, Genazzani AR.