K SJogren Syndrome 12 hypofunction of the salivary and lacrimal glands multisystem autoimmune disease Prevalence rate 0.1%-4.6% Male/female 1/9 Peak ages 40-50 years oldSjögren Syndrome 3 ⚫hypofunction of the salivary and lacrimal glands ⚫multisystem autoimmune disease Prevalence rate 0.1%~4.6% Male/female 1/9 Peak ages 40~50 years old