@misc{indiciae14f1a7271600, title = {Ergotamine, dihydroergotamine: current uses and problems.}, author = {P Tfelt-Hansen}, year = {2001}, doi = {10.1185/0300799039117009}, url = {https://pubmed.ncbi.nlm.nih.gov/12463275/}, note = {Source identifier: 12463275} }