There are multiple definitions:

1. human corneal epithelial cell(English)

   • ECM, EGF, ELISA, FBS, FGF, NGF, PBS, PDGF, PRGF, PRK, PRP, SMA, TUNEL, WP
   • Ophthalmology
   • https://doi.org…xer.2013.07.007

2. hard cardiac event(English)

   • defined as cardiac death or non-fatal myocardial infarction
   • ACMMI, ESVI, LVEF, MPS, SHS, SPECT
   • Cardiology, Prognosis, Medical imaging
   • https://doi.org…2350-008-9000-x