Table 1.

Study population.

	n	Radio-cephalic	Brachio-cephalic	Brachio-basilic	Attended both scans	Attended pre-maturation scan	Attended post-maturation scan
Male	8	5	1	2	6	8	6
Female	11	5	5	1	6	10	7
Total	19	10	6	3	12	18	13