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Smith, JA (janeiro de 2015). «Update on ankylosing spondylitis: current concepts in pathogenesis.». Current allergy and asthma reports. 15 (1). 489 páginas. PMID25447326. doi:10.1007/s11882-014-0489-6
The AHA clinical cardiac consult. J. V. Nixon, Joseph S. Alpert, American Heart Association 2nd ed ed. Philadelphia, PA: Lippincott Williams & Wilkins. 2007. OCLC71223208 !CS1 manut: Texto extra (link)