RT Journal Article SR Electronic T1 Adverse effects of herbal medicine JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 417 OP 418 DO 10.7861/clinmedicine.13-4-417a VO 13 IS 4 A1 Shridhar Dwivedi A1 Deepti Chopra YR 2013 UL http://www.rcpjournals.org/content/13/4/417.2.abstract