Assertion: syndrome's feature | /r/CapableOf | affect less than half of people
Facets:
Source sentences:
text: Less common features of Opitz G/BBB syndrome, affecting less than half of people with this disorder, include minor heart defects, an obstruction of the anal opening (imperforate anus), and brain defects such as a small or absent connection between the left and right halves of the brain ( ).