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Supplemental Material. 1. Patients and . M. e. thods. 1.1. Study population. Between February 2009 and December 2018, a total of 117 consecutive children with hypertrophic obstructive cardiomyopathy (HOCM), aged from 0.6 to 17.5 years and undergoing surgical treatment at our institution, were included in the present study. ................
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