Table 1. Information about SMA patients and control individuals.

Subjects
Patients	Type of disease	Age	Age of onset	SMN2 copy numbers	Controls	Age
1	I	5 Months	2 Months	2	1	1 Year
2	I	3 Months	3 Months	2	2	2 Years
3	I	6 Months	Before 6 months	2	3	2.5 Years
4	II	10 Months	2.5 Months	3	4	2.5 Years
5	II	2 Years	Before 1 year	3	5	3–4 Years
6	II	1.5 Year	Before 1 year	2	6	19 Years
7	IIIb	18 Years	15 Years	4	7	11 Years
8	IIIb	12 Years	10 Years	4	8	19 Years
9	IIIb	29 Years	19 Years	3	9	20 Years
10	IIIb	19 Years	5 Years	4	10	19 Years
11	IIIb	19 Years	5 Years	4	11	20 Years
12	IV	21 Years	21 Years	4