TY - JOUR T1 - Hypnic headache associated with medication overuse: case report AU - Baykan, Betül AU - Ertaş, Mustafa Y1 - 2008 PY - 2008 DA - 2008 N1 - doi: DO - T2 - Agri JF - Agri JO - Ağrı SP - 40 EP - 43 VL - 20 IS - 3 SN - M3 - PMID: 19085181 UR - https://dx.doi.org/ Y2 - 2008 ER -