Risk factors for symptom onset in PI*Z alpha-1 antitrypsin deficiency.

"We extend our gratitude and thanks to the Alpha-1 Association and the Alpha-1 Foundation. We especially thank Janis Berend, CNP, RN, Symma Finn, Daniel Laskowski, RPFT/CCRC, Michele Cooper, Heather Davis, Kieran Nelson, Joy Davis, Stephanie Clancy, and the faculty and staff of the Division of Environmental and Occupational Health Sciences. We thank Zung Vu Tran, Ph.D. for his review of biostatistical methods. We thank Paul Blanc, M.D., M.P.H. for his thoughtful review and recommendations on the manuscript. We also thank Becki Bucher-Bartelson, Ph.D. for her invaluable assistance in the initial phases of this work. Most of all we thank the participants, without whose help this study would not have been possible. This work was funded in part by a grant from the Department of Health and Human Services, United States Public Health service, CDC/NIOSH Grant OH, USA 007454."