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High serum sCD163/sTWEAK ratio is associated with lower risk of digital ulcers but more severe skin disease in patients with systemic sclerosis

Otylia Kowal-Bielecka*, Marek Bielecki, Serena Guiducci, Beata Trzcinska-Butkiewicz, MaƂgorzata Michalska-Jakubus, Marco Matucci-Cerinic, Marek Brzosko, Dorota Krasowska, Lech Chyczewski and Krzysztof Kowal

Arthritis Research & Therapy 2013, 15:R69  doi:10.1186/ar4246

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