TY - RPRT TI - Medication-overuse headache: a worldwide problem. AU - Hans-Christoph Diener AU - Volker Limmroth PY - 2004 DO - 10.1016/s1474-4422(04)00824-5 UR - https://pubmed.ncbi.nlm.nih.gov/15261608/ ID - 15261608 ER -