preferred_name: Dyspnea (onset 35 years in smokers, 45 years in nonsmokers)
preferred_name_lc: dyspnea (onset 35 years in smokers, 45 years in nonsmokers)
label: Dyspnea (onset 35 years in smokers, 45 years in nonsmokers)
label_lc: dyspnea (onset 35 years in smokers, 45 years in nonsmokers)