Igangværende medicinsk behandling for systemisk sklerose og fingersår blev tilladt, hvis disse var konstante i mindst 1 måned før påbegyndelse af behandlingen og under det dobbeltblinde studie.
Background treatments for systemic sclerosis and digital ulcers were permitted if they remained constant for at least 1 month prior to the start of treatment and during the double-blind study period.