preferred_name: Prescribed amount of stationary oxygen while at rest is less than 1 liter per minute (lpm)
preferred_name_lc: prescribed amount of stationary oxygen while at rest is less than 1 liter per minute (lpm)
label: Prescribed amount of stationary oxygen while at rest is less than 1 liter per minute (lpm)
label_lc: prescribed amount of stationary oxygen while at rest is less than 1 liter per minute (lpm)