RT Journal Article SR Electronic T1 Preface JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S4 OP S4 VO 76 IS 4 suppl 2 A1 Earl E. Bakken YR 2009 UL http://www.ccjm.org/content/76/4_suppl_2/S4.abstract AB