What if the sexual headache is not a joke?
BJMP 3:304-308, Redelman, M., 2010
Practice Parameter: Treatment of Nonmotor Symptoms of Parkinson Disease: Report of the Quality Standards Subcommittee of the American Academy of Neurology
Neurol 74:924-931, Zesiewicz,T.A.,et al, 2010
Nonarteritic Ischemic Optic Neuropathy Developing Soon After Use of Sildenafil (Viagra): A Report of Seven New Cases
J Neuroophthalmol 25:9-13, Pomeranz,H. &Bhavsar,A.R., 2005