There are multiple definitions:

1. central retinal vein(English)

   • CRA, LPCA, MPCA
   • Ophthalmology

2. credible risk variant(English)

   • refers to statistical fine-mapping conducted to prioritize plausible variants
   • BMD, eBMD, GWAS, GWS, MTAG, UKB
   • Genomics, Statistics
   • https://doi.org…endo.2020.00243

3. conventional ratio ventilation(English)

   • ERV
   • Respiratory system, Ratio-based metric
   • https://doi.org…598-019-53194-2