Insensitivity to Pain in Psychotic Patients
NEJM 296:1480, Geschwind,N., 1977
Somatic Sensory Changes During Dorsal Column Stimulation in Man
Neurol 22:437, Brennan,R.,et al, 1972
Opiate Peptides
Analgesia, & the Neuroendocrine System, Editorial, BMJ 1:741-742., , 1980