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3. The histopathology of Sjögren's syndrome in labial salivary gland biopsies;Greenspan;Oral Surg Oral Med Oral Pathol,1974
4. Assessment of labial salivary gland changes in patients with rheumatoid arthritis by subjective and quantitative methods;Markkanen;Appl Pathol,1989
5. Lip biopsy in connective tissue diseases. A review and study of seventy cases;Friedman;Oral Surg Oral Med Oral Pathol,1979