1. Epidemiology of alpha1-protease inhibitor deficiency;Hutchison, D.C.S.;Eur Respir J,1990
2. Natural history and life expectancy in severe alpha1-antitrypsin deficiency;Larsson, C.;Pi Z. Acta Med Scand,1978
3. Lung function studies in asymptomatic individuals with moderately (Pi SZ) and severely (PiZ) reduced levels of alpha1-antitrypsin;Larsson, C.; Dirksen, H.; Sundstrom, G.; Eriksson, S.;Scand J Respir Dis,1976
4. Heterozygosity in the Pi system as a pathogenetic cofactor in chronic obstructive pulmonary disease (COPD);Bartmann, K.; Fooke-Achterrath, M.; Koch, G.; Nagy, I.; Schultz, I.; Weis, E.;Eur J Respir Dis,1985
5. Alpha-1-antitrypsin deficiency: clinical and physiological features in heterozygotes of Pi type SZ. A survey by the British Thoracic Association;Hutchison, D.C.S.; Tobin, M.J.; Cook, P.J.L.;Br J Dis Chest,1983