Methods: We studied 75 clinically stable patients with a range of seerity of airway obstruction and 42 healthy smoker or ex-smoker control subjects, free of cardioascular disease.
Methods: We studied 75 clinically stable patients with a range of seerity of airway obstruction and 42 healthy smoker or ex-smoker control subjects, free of cardioascular disease.
方法：我们对75位严重气道阻塞的临床稳定患者和42位无心血管疾患的健康吸烟者或戒烟者作为对照组。