Geographic distribution of patients with dermatomyositis. A residential area of 95 patients was plotted. NGY, Nagoya city. Red and white circles show patients with and without anti-melanoma differentiation-associated gene 5 (anti-MDA-5) antibodies, respectively. Blue line shows the Kiso River, which is the biggest in the area.
Muro et al. Arthritis Research & Therapy 2011 13:R214 doi:10.1186/ar3547