preferred_name: Reduced-to-extinguished rod and cone electroretinograms (ERG)
preferred_name_lc: reduced-to-extinguished rod and cone electroretinograms (erg)
label: Reduced-to-extinguished rod and cone electroretinograms (ERG)
label_lc: reduced-to-extinguished rod and cone electroretinograms (erg)