Research: The authors suggested that head to head trials of pramipexole and ropinirole were required, as was further research to explore factors such as treatment half life, dosage, titration period and effects on depression, quality of life and pain.FundingFunded by Boehringer Ingelheim GmbH (manufacturer of pramipexole).Bibliographic detailsQuilici S, Abrams KR, Nicolas A, Martin M, Petit C, LLe