BTG3 and localized scleroderma: Independent searches of the PubMed, Google Scholar, and Webscope databases for relevant studies was performed using the following search terms: morphea, localized scleroderma, antibody, ANA, AHA, pediatric, rheumatoid factor (RF), juvenile, morphea cohort etc. The search was limited to studies that included 50 or more patients tested for antibodies of interest.