Benign Coital CephalalgiaArch Neurol 38:710-712, Porter,M.,et al, 1981
Benign Sexual Headach within a FamilyArch Neurol 43:1158-1160, Johns,D.R., 1986
Posttraumatic Dysautonomic CephalgiaArch Neurol 32:649, Vijayan,N.,et al, 1975