There are multiple definitions:

1. nitric oxide synthase(English)

   • see tetrahydrobiopterin BH4
   • ADMA, eNOS, iNOS, nNOS, L-NAME
   • Vessel properties, Physiology

2. not otherwise specified(English)

   • NEC, MedDRA, MedDRA/J
   • Practical shorthand, Terminology, Medical informatics

3. Newcastle–Ottawa Scale(English)

   • method used to assess the quality of published nonrandomized studies, including selection (0–4 points), comparability (0–2 points), and exposure (0–3 points)
   • IAHP, MA
   • Scoring systems/scales, Meta-analysis
   • https://doi.org…1430-018-0218-7
   • http://www.ohri…logy/oxford.htm