Nailfold capillaroscopy: a useful instrument for early diagnosis of systemic sclerosis in patients with primary biliary cholangitis. (February 2020) - Crescenzi, D.; Maroni, L.; Mazzetti, M.; Menghini, D.; Gelardi, C.; Pedini, V.; Mezzanotte, C.; Danieli, M.G.; Marzioni, M.