DOI: 10.1055/s-00000122

Notfall & Hausarztmedizin (Hausarztmedizin)

References

Granella F, Farina S, Malferrari G, Manzoni GC.
Drug abuse in chronic headache: a clinico-epidemiologic study. 
Cephalalgia 1987; 7: 15-19  

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