TY  - GEN
AU  - Altman,D G
TI  - Constructing a normal range
SN  - 0009-9147
PY  - 1981///0922
KW  - Adolescent
KW  - Age Factors
KW  - Child
KW  - Child, Preschool
KW  - Humans
KW  - Infant
KW  - Reference Values
KW  - Vanilmandelic Acid
KW  - urine
N1  - Publication Type: Letter
ER  -