@misc{indiciaed02619ed6fda, title = {Levodopa ineffective in migraine.}, author = {H J Hansen and E Dupont}, year = {1972}, doi = {10.1016/s0140-6736(72)90104-3}, url = {https://pubmed.ncbi.nlm.nih.gov/4108974/}, note = {Source identifier: 4108974} }