1825
Table of Contents > Health Dictionary > Hellin law

Hellin law

Twins occur once in 89 births, triplets once in 892, and quadruplets once in 893. If the frequency of twins in a population is p, the frequency of triplets is p2, and the frequency of quadruplets is p3.
Healthy Living Marketplace
Carlson Labs
Aubrey Organics
Now Food
Garden Of Life
Solgar
Natural Vitality