{"Definition":"Not Applicable","Description":"Data does not apply to that particular case"}
{"Code":"NAC","Definition":"Not Acquired","Description":"Information may be available but has not been acquired."}
{"Code":"NRA","Definition":"Not Readily Available","Description":"Information was not readily available to the authors (e.g., no ready access to the publication, language barrier)."}
{"Code":"NI","Definition":"No Information","Description":"No information available in original publication"}