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Sixteen patients who fit the diagnostic criteria of endocardial fibroelastosis were investigated by means of mumps skin tests and serum assays of mumps hemagglutination-inhibiting antibodies. No relationship was found between the clinical entity, endocardial fibroelastosis, and either mumps-specific antibodies or delayed cutaneous hypersensitivity to the mumps virus.
Gersony et al. (Tue,) studied this question.