The long drought: the dearth of public funding for headache research.
Shapiro
R  E
R
Goadsby
P  J
P
D035843:Biomedical Research / Q000191:economics* / Q000706:statistics & numerical data* / Q000639:trends; D005060:Europe; D005380:Financing, Government / Q000191:economics* / Q000706:statistics & numerical data* / Q000639:trends; D006261:Headache / Q000191:economics*; D006801:Humans; D014481:United States