RT Journal Article SR Electronic T1 Introduction JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S2 OP S3 VO 71 IS 2 suppl 2 A1 Nancy Foldvary-Schaefer A1 Martha J. Morrell YR 2004 UL http://www.ccjm.org/content/71/2_suppl_2/S2.abstract AB