The effect of calcium channel blockers on digital ulcers in systemic sclerosis: data from a prospective cohort study.

"Conflict of interest MN: Research grants and honoraria from AstraZeneca, Boehringer Ingelheim, GSK and Janssen. No other authors have any conflict of interest to declare."

"Funding Open Access funding enabled and organized by CAUL and its Member Institutions The Australian Scleroderma Cohort Study is supported by Janssen, Scleroderma Australia, Scleroderma Victoria, Arthritis Australia, Musculoskeletal Australia, the Australian Rheumatology Association, St Vincent’s Hospital Melbourne Research Endowment Fund, GSK, Pfizer, BMS, Roche and Bayer. KM holds a National Health and Medical Research Council of Australia Investigator Grant (APP 1197169). MN holds a National Health and Medical Research Council of Australia Investigator Grant (GTN 1176538)."