Hellin's law

Hellin's law definition - medical

Hel·lin's law (hĕlˈĭnz)

noun
The principle that twins occur once in 89 births, triplets once in 892 births, and quadruplets once in 893 births.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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