An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Hara AK, Johnson CD, Reed JE, Ahlquist DA, Nelson H, Ehman RL, McCollough CH, Ilstrup DM.Hara AK, et al. Among authors: johnson cd.Gastroenterology. 1996 Jan;110(1):284-90. doi: 10.1053/gast.1996.v110.pm8536869.Gastroenterology. 1996.PMID: 8536869
Johnson CD, Stephens DH.Johnson CD, et al.Mayo Clin Proc. 1989 Oct;64(10):1276-83. doi: 10.1016/s0025-6196(12)61291-9.Mayo Clin Proc. 1989.PMID: 2687590Review.
Leslie DF, Johnson CD, Johnson CM, Ilstrup DM, Harmsen WS.Leslie DF, et al. Among authors: johnson cd, johnson cm.AJR Am J Roentgenol. 1995 Mar;164(3):625-9. doi: 10.2214/ajr.164.3.7863883.AJR Am J Roentgenol. 1995.PMID: 7863883
Burkart DJ, Johnson CD, Ehman RL.Burkart DJ, et al. Among authors: johnson cd.AJR Am J Roentgenol. 1993 Dec;161(6):1279-82. doi: 10.2214/ajr.161.6.8249742.AJR Am J Roentgenol. 1993.PMID: 8249742