preferred_name: No drugs or group I-drug-intake on less than 15 days in the last 4 weeks.
preferred_name_lc: no drugs or group i-drug-intake on less than 15 days in the last 4 weeks.
label: No drugs or group I-drug-intake on less than 15 days in the last 4 weeks.
label_lc: no drugs or group i-drug-intake on less than 15 days in the last 4 weeks.