* Sand T, Bovim G, Helde G: Intracutaneous sterile water injections do not relieve pain in vervicogenic headache. Acta Neurol Scand 86: 526-528, 1992 | * Sand T, Bovim G, Helde G: Intracutaneous sterile water injections do not relieve pain in vervicogenic headache. Acta Neurol Scand 86: 526-528, 1992 |