Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neuregulin 1 strongly implicated as susceptibility gene for
  schizophrenia by allelic association study   This paper has been withdrawn by the authors, due to a possible bias in the
twosome approach found by Dr. George Kirov. It seems that the bias has
amplified an existing weak signal. The detection of the bias was made possible
by the posting of the original data on the preprint server. It was peer review
at its best, and confirms in our view the importance of preprint servers.

21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga