The efficacy and safety of dipyrone (Novalgin) tablets in the treatment of acute migraine attacks: a double-blind, crossover, randomized, placebo-controlled, multi-center study - Tulunay, FC; Ergün, H; Gülmez, SE; Ozbenli, T; Ozmenoglu, M; Boz, C; Erdemoglu, AK; Varlikbas, A; Göksan, B; Inan, L (Funct Neurol, 2004)