Koch K, Fenner A
MMW Munch Med Wochenschr. 1975 Jan 10;117(2):53-6.
During the basic examination (U-2) between the 5th and 10th days of life, 104 pathological findings were made in 93 out of 538 children born in a general practitioner hospital. The incidence of 25% pathological findings in neonates, of which about 70% were obtained at the U-2, in our opinion, justifies the U-2 as a routine measure for all neonates. The percentage of positive findings in neonates from unselected pregnancies must be estimated still higher.