(1) infections: hepatitis B virus, hepatitis C virus, syphilis, schistosomiasis, HIV, Helicobacter pylori and the like.
(2) autoimmune diseases: systemic lupus erythematosus, rheumatoid arthritis, Hashimoto's disease, sarcoidosis, Sjogren's syndrome and so on.
(3) tumors: a variety of solid tumors and lymphoma,etc.
(4)drugs and heavy metal: penicillamine, tiopronin, gold, mercury, rare as well as lithium, formaldehyde, non-steroidal anti-inflammatory drugs and captopril,etc. bohemian wedding apparels in vintage style
