RT Journal Article SR Electronic T1 Ictal asystole due to unsuspected cocaine abuse JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 199 OP 200 DO 10.7861/clinmedicine.11-2-199 VO 11 IS 2 A1 Susanne Watkins A1 Paul A Holmes A1 Robin S Howard YR 2011 UL http://www.rcpjournals.org/content/11/2/199.abstract