45 candidates

[shocked]

genes being screened to provide insight into potential genetic predisposition

http://www.thejournalofheadacheandpain.com/content/pdf/1129-2377-1-S1-P34.pdf

shocked

[Tony Only]

Gene study has been ongoing in Finland as well in the last few years. If I have understood correctly the researchers wished for more patient participation. I will post the results here when I hear them.