RT Journal Article SR Electronic T1 ‘With a pinch of salt’ revisited JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 418 OP 418 DO 10.7861/clinmedicine.10-4-418 VO 10 IS 4 A1 Francesco P Cappuccio YR 2010 UL http://www.rcpjournals.org/content/10/4/418.1.abstract