RT Journal Article SR Electronic T1 Modern methods of pharmacovigilance: detecting adverse effects of drugs JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 486 OP 489 DO 10.7861/clinmedicine.9-5-486 VO 9 IS 5 A1 G Niklas Norén A1 I Ralph Edwards YR 2009 UL http://www.rcpjournals.org/content/9/5/486.abstract