Comparison of First Degree Relatives and Spouses of Poeple with Chronic Tension Headache
BMJ 314:1092-1093, Ostergaard,S.,et al, 1997
A Rating Scale for Gilles de la Tourette's Syndrome:Description, Reliability, & Validity Data
Neurol 37:1542-1544, Goetz,C.G.,et al, 1987