Serum IgG and risk of exacerbations and hospitalizations in chronic obstructive pulmonary disease

Fernando Sergio Leitao Filho, Seung Won Ra, Andre Mattman, Robert S. Schellenberg, Nick Fishbane, Gerard J. Criner, Prescott G. Woodruff, Stephen C. Lazarus, Richard Albert, John E. Connett, Meilan K. Han, Fernando J. Martinez, Janice M. Leung, S. F.Paul Man, Shawn D. Aaron, Robert M. Reed, Don D. Sin