RT Journal A1 Joann Lang M, Koch R, Fishier K, Baker R T1 NOnphenylketonuric hyperphenylalaninemia JF American Journal of Diseases of Children JO American Journal of Diseases of Children YR 1989 FD December 1 VO 143 IS 12 SP 1464 OP 1466 DO 10.1001/archpedi.1989.02150240086024 UL http://dx.doi.org/10.1001/archpedi.1989.02150240086024 AB • Sixteen subjects with nonphenylketonuric hyperphenylalaninemia were followed up during a period of years. Dietary treatment did not seem to influence the outcome, and no relationship between blood phenylalanine and intellectual outcome was demonstrable.(AJDC. 1989;143:1464-1466)