Pleural and Retroperitoneal Fibrosis from Dihydroergotamine
NEJM 321:1760, Malaquin,F.,et al, 1989
Fibrotic Processes Associated with Long-Term Ergotamine Therapy
NEJM 311:601-602, Robert,M.,et al, 1984
Valve Disease Associated with Ergot Alkaloid Use:Echocardiographic and Pathologic Correlations
Ann Int Med 117:50-52, Redfield,M.M.,et al, 1992