SUBJECT:  Age-specific reference intervals (``normal ranges'')
AUTHORS:  Eileen Wright and Patrick Royston
          Royal Postgraduate Medical School, UK
SUPPORT:  ewright@rpms.ac.uk
          proyston@rpms.ac.uk

INSTALLATION:
Use standard in1 installation instructions.

HELP:
From inside Stata, on-line help is available.  Type


   . help centcalc
   . help xriml