help snpfetch                                                    (version 1.2) 
Daniel Elwood Cook {Danielecook@gmail.com}                   www.Elwoodcook.com
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    snpfetch-- Retreive information from dbSNP for a set of SNP id's. The
    following information is retrieved:

         Gene Name
         Gene ID
         Chromosome
         Base Pair Position
         Alleles
         Heterozygosity
         Locus type
         Orientation of Strand
         Species
         Validated SNP
         Minimum Probability
         Maximum Probability

Syntax

    snpfetch rs_list , bundle(integer) assembly(string)

Description

    snpfetch uses the efetch utilities provided by the NCBI (National Center
    for Biotechnology Information) to retrieve information for a given list
    of SNPs (Single Nucleotide Polymorphims).

    You should use snpfetch for data management/retrieval purposes primarily.
    It creates several variables with set names and fills them with data. It
    will overwrite pre-existing data in these variables.

    (example: Gene_ID, Chr_ID, Alleles).

    Ideally, you'll use this plugin to annotate a dataset you have by running
    it on only the set of snps from the set and merging or by taking care
    with the names of the variables in your set.

    snpfetch can handle duplicates.



Usage

    Follow the command with the name of a variable specifying a list of SNPs.
    Your list can be numeric, ignoring the rs prefix, or a string with or
    without the rs prefix.

    snpfetch will work with both and download a large amount of data for each
    set.

    The option bundle can be used to adjust how many records Stata will
    attempt to download at once.  snpfetch works by downloading a set of
    records for your list of snps, parsing each set out, add the data to your
    dataset, and move onto the next set. This was necessary due to string
    length limitations within Stata.

    The option assembly can be used to specify different reference assemblies
    to retrieve data from. If not specified, the assembly is set to
    "GRCh37.p5" (This is the latest human reference assemblies).

    Important! If you are retrieving data for organisms other than humans,
    you must specify the name of the assembly.

    For more information on assemblies, see:

    GRCh37.p5 -
    http://www.ncbi.nlm.nih.gov/projects/genome/assembly/grc/human/

    HuRef - http://huref.jcvi.org/