Table 1.

Clinical data of the human UPJ obstruction patients

	N	Age (days) at urine sampling median [range]	HN grade median [range]	Pelvic diameter mm median [range]
Healthy controls	8	112 [20–201]	n.a.	n.a.
UPJ obstruction	20	74 [3–269]	2 [1–4]	15 [6–40]

HN hydronephrosis, n.a. not applicable