From: Chapter 5, The Single Nucleotide Polymorphism Database (dbSNP) of Nucleotide Sequence Variation
The NCBI Handbook [Internet].
McEntyre J, Ostell J, editors.
Bethesda (MD): National Center for Biotechnology Information (US); 2002-.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.