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PERIODONTAL DISEASE IN PREGNANCY. I. PREVALENCE AND SEVERITY.
Acta Odontologica Scandinavica, 1963H. Löe, J. Silness
semanticscholar +1 more source
The PHQ-15: Validity of a New Measure for Evaluating the Severity of Somatic Symptoms
Psychosomatic Medicine, 2002K. Kroenke +2 more
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