NCIt definition : A unit of area measurement equal to a square measuring one millimeter on each side.
One square millimeter is equal to 10(E-2) square centimeter and 10(E-6) square meter.;
Alternative definition : CDISC: A unit of area measurement equal to a square measuring one millimeter on each
side. One square millimeter is equal to 10(E-2) square centimeter and 10(E-6) square
meter.(NCI);