http://www.sbce.med.br http://www.achenet.org
Sociedade Brasileira
de Cefaléia		 American Concil for
Headache Eduacation
http://www.chhelp.org http://www.clusterheadaches.com
Cluster Headache Help Cluster Headache
http://www.clusterheadaches.com http://www.abneuro.org
O.U.C.H – Organization
for understanding
cluster headaches		 Academia Brasileira
de Neurologia
http://www.aan.com http://www.clusterhoofdpijn.nl
American Academy
of Neurology (AAN)		 Cluster
Leven Met Pijn