Once thought rare,<unk>  is now known to be common and affects people worldwide.  The disease can affect people of any age, race and gender.  However, it is most common among adults between the ages of 20 and 40 and in certain ethnic groups.
Sarcoidosis risk factors
Endocarditis historical background
Bronchiolitis risk factors
Tuberculosis risk factors
Ehrlichiosis risk factors
Uveitis risk factors
Lymphomatoid granulomatosis risk factors
Pulmonary embolism risk factors