They mention using NSAIDS as preventative treatment, but SO much work has been done since that has shown very clearly how daily NSAIDS cause chronic migraine headaches and do not prevent migraine
headaches. Also, they mention Fluoxetine (an SSRI which is rarely used today
for migraine prevention) as a treatment on par with current first line migraine prophylactic. So, with this in mind, take this study lightly... it is an interesting read and still has relevant and useful information in it...