RT Journal Article SR Electronic T1 Is prolonged use of computer games a risk factor for deep venous thrombosis in children? JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 190 OP 191 DO 10.7861/clinmedicine.4-2-190a VO 4 IS 2 A1 Richard JA Murrin YR 2004 UL http://www.rcpjournals.org/content/4/2/190.2.abstract AB