. 2014 Dec 11;5:178. doi: 10.4103/2152-7806.146831
Copyright: © 2014 Wilson TA.
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Table 1.
ICD-9 codes used in NIS query
