Park, Joon Hyeong Recurrent macrophage activation syndrome since toddler age in an adolescent boy with HLA B27 positive juvenile ankylosing spondylitis. [electronic resource] - Korean journal of pediatrics Oct 2016 - 421-424 p. digital Publication Type: Journal Article ISSN: 1738-1061 Standard No.: 10.3345/kjp.2016.59.10.421 doi