Table 1.

Start of treatment in the Graf classification depending on the age of the infant

Age of the infant	1A	1B	2A	2B	2C	2D	3A	Total
0–3 months		1 (6%)	2 (12%)		7 (41%)	3 (18%)	4 (23%)	17
3–6 months				16 (70%)	4 (17%)	3 (13%)		23
6–12 months		2 (9%)		16 (73%)	1 (5%)	3 (13%)		22