preferred_name: Hearing threshold at or above 90 dB at all frequencies tested (0.25-8.0 kHz)
preferred_name_lc: hearing threshold at or above 90 db at all frequencies tested (0.25-8.0 khz)
label: Hearing threshold at or above 90 dB at all frequencies tested (0.25-8.0 kHz)
label_lc: hearing threshold at or above 90 db at all frequencies tested (0.25-8.0 khz)