There are multiple definitions:

1. congenital nephrotic syndrome of the Finnish type(English)

   • NPHS1
   • Congenital disorders, Nephrology

2. Commonwealth Nurses Federation(English)

   • Nurse / nursing, Organizations (clinical)

3. Child Neurology Foundation(English)

   • TSC
   • Pediatrics, Neurology

4. conventional Nissen fundoplication(English)

   • carries a higher risk for surgical reintervention compared with LNF, mainly due to incisional hernia corrections
   • GERD, LNF, PPI
   • Mouth, esophagus and stomach, Surgery
   • https://doi.org…b013e3181bcdaa7

5. carbonized nanofiber(English)

   • CNT, CTF, NF, PEI
   • Nano-sciences
   • https://doi.org…NB.2015.2519505