https://ihs-headache.org/en/posters/comparison-of-intranasal-ketamine-dihydroergotamine-and-valproic-acid-for-abortive-migraine-treatment-in-a-pediatric-emergency-department/
Comparison of intranasal ketamine, dihydroergotamine, and valproic acid for abortive migraine...
valproic acidcomparisonintranasalketaminedihydroergotamine