| Hellin, Dyonizy | <person> Polish pathologist, 1867-1935. See: Hellin's law. (05 Mar 2000) |
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| Hellin's 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. (05 Mar 2000) |
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