PhaeochromocytomaLancet 366:665-675, Lenders,J.W.M.,et al, 2005
Migraine and Autonomic Nervous System FunctionNeurol 58:422-427, Shechter,A.,et al, 2002
Headaches, In Clinical SymposiaCiba Co, 1989, Vol 41, p 2-32., Diamond,S.&Medina,J.L., 1989