by Imokawa, S, Colby, TV, Leslie, KO, Helmers, RA
Published in The European respiratory journal (01.02.2000)

by Schwartz, D A, Helmers, R A, Galvin, J R, Van Fossen, D S, Frees, K L, Dayton, C S, Burmeister, L F, Hunninghake, G W
Published in American journal of respiratory and critical care medicine (01.02.1994)

by Wechsler, Michael E, Garpestad, Erik, Flier, Steven R, Kocher, Olivier, Weiland, David A, Polito, Albert J, Klinek, Michelle M, Bigby, Timothy D, Wong, Gordon A, Helmers, Richard A, Drazen, Jeffrey M
Published in JAMA : the journal of the American Medical Association (11.02.1998)

by KHOOR, Andras, LESLIE, Kevin O, TAZELAAR, Henry D, HELMERS, Richard A, COLBY, Thomas V
Published in American journal of clinical pathology (01.05.2001)

by Rank, M. A., Ochkur, S. I., Lewis, J. C., Teaford, H. G., Wesselius, L. J., Helmers, R. A., Lee, N. A., Nair, P., Lee, J. J.
Published in Allergy (Copenhagen) (01.04.2016)

by Schwartz, D A, Van Fossen, D S, Davis, C S, Helmers, R A, Dayton, C S, Burmeister, L F, Hunninghake, G W
Published in American journal of respiratory and critical care medicine (01.02.1994)

by Dayton, C S, Schwartz, D A, Helmers, R A, Pueringer, R J, Gilbert, S R, Merchant, R K, Hunninghake, G W
Published in Chest (01.01.1993)

by Schwartz, D A, Helmers, R A, Dayton, C S, Merchant, R K, Hunninghake, G W
Published in Journal of applied physiology (1985) (01.11.1991)

by Gharagozloo, F, Dausmann, M J, McReynolds, S D, Sanderson, D R, Helmers, R A
Published in Chest (01.09.1995)

by Helmers, R A, Sanderson, D R
Published in Clinics in chest medicine (01.09.1995)

by Helmers, R A, Hunninghake, G W
Published in Chest (01.11.1989)

by Helmers, R A, Dayton, C S, Floerchinger, C, Hunninghake, G W
Published in Journal of applied physiology (1985) (01.10.1989)

by Helmers, R A, Zavala, D C
Published in Chest (01.09.1988)

by Merchant, R K, Schwartz, D A, Helmers, R A, Dayton, C S, Hunninghake, G W
Published in The American review of respiratory disease (01.08.1992)

by Schwartz, D A, Merchant, R K, Helmers, R A, Gilbert, S R, Dayton, C S, Hunninghake, G W
Published in The American review of respiratory disease (01.09.1991)

by RADY, MOHAMED Y., JOHNSON, DANIEL J., PATEL, BHAVESH M., LARSON, JOEL S., HELMERS, RICHARD A.
Published in Mayo Clinic proceedings (01.12.2005)

by Helmers, R A, Hunninghake, G W
Published in Mayo Clinic proceedings (01.07.1987)

by Cheung, Oi Yee, Muhm, J.R., Helmers, R.A., Aubry, Marie-Christine, Tazelaar, Henry D., Khoor, Andras, Leslie, Kevin O., Colby, Thomas V.
Published in Annals of Diagnostic Pathology (01.04.2003)

by Minor, Jr, R L, Helmers, R A
Published in Sarcoidosis (01.09.1990)

by Sakata, Kenneth, Helmers, Richard
Published in Southwest journal of pulmonary & critical care (02.04.2014)