“…have been described including peculiar roentgenoMass screening of newborns for phenylketonuria graphic bone changes [8,25,26,44], vacuolization of red cell precursors in the bone marrow [35,57], megaloblastic anemia [53], hypoglycemia [21,23], hypoproteinemia [32], 'phenylalanine deficiency syndrome' [11,52,63], poor weight gain [43,63], cutaneous lesions [52,63], and impaired antibody responses [62]. A number of authors admit that weight gain and linear growth of their treated patients has been retarded [1,6,13,35,41,57], while others state that these indices have been maintained within the normal range [7,8,32,61].…”