Table 1.

Demographic and Clinical Characteristics of 18 SMID Patients.

		Number of cases
Sex	Male	10
	Female	8
Age	20~39 years	9
	40~59 years	7
	60~79 years	2
Underlying disease	Cerebral palsy	10
	Congenital brain damage	3
	Brain malformation	2
	CNS infection sequelae	1
	Other	2