作者单位：Cook Cty Hosp, John H Stroger Jr Hosp, Dept Pulm & Crit Care, Chicago, IL 60612 USA[1]Rush Univ, Med Ctr, Dept Rheumatol, Chicago, IL 60612 USA[2]John H Stroger Jr Hosp Cook Cty, Dept Radiol, Chicago, IL USA[3]John H Stroger Jr Hosp Cook Cty, Dept Internal Med, Chicago, IL USA[4]Forest Hills Hosp, Dept Internal Med, Forest Hills, NY USA[5]
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