根據《關節炎與風濕病》（Arthritis & Rheumatism）期刊發表的一項研究，會引起多個關節發炎和變形的致殘疾病風濕性關節炎(Rheumatoid arthritis)可能源自肺部。
According to a research published on the journal of Arthritis and Rheoumatism, the cause for the disabling diseas Rheomatoid arthritis, which enables to trigger multitude of joints inflamed and deformed, is likely at lungs.
