Myasthenia gravis and rheumatoid spondylitis. Coexistence in three cases.
D000328:Adult; D006801:Humans; D008297:Male; D008875:Middle Aged; D009157:Myasthenia Gravis / Q000150:complications* / Q000175:diagnosis; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000175:diagnosis