[Routine screening for inborn errors using urine filterpaper specimens at age 4-5 weeks (author's transl)]
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Since 1972 we have been using a urine screening for the detection of inborn errors of amino acid metabolism, which cannot be revealed in newborn-blood-screening with Guthrie's bacterial inhibition assay. It is performed at an age of 4-6 weeks by means of thin ... ...
