FerriCValentiniGCozziF. Systemic sclerosis: demographic, clinical, and serologic features and survival in 1,012 Italian patients. Medicine (Baltimore). 2002;81:139-153.
2.
JohnsonDADraneWECurranJ. Pulmonary disease in progressive systemic sclerosis: a complication of gastroesophageal reflux and occult aspiration?Arch Intern Med. 1989;149:589-593.
3.
AkessonAWollheimFA. Organ manifestations in 100 patients with progressive systemic sclerosis: a comparison between the CREST syndrome and diffuse scleroderma. Br J Rheumatol. 1989;28:281-286.
4.
LingTCJohnstonBT. Esophageal investigations in connective tissue disease: which tests are most appropriate?J Clin Gastroenterol. 2001;32:33-36.
5.
Zandman-GoddardGTweezer-ZaksNShoenfeldY. New therapeutic strategies for systemic sclerosis: a critical analysis of the literature. Clin Dev Immunol. 2005;12:165-173.