RT Journal Article SR Electronic T1 Puff laddy: a 5-year-old-boy with forehead swelling JF BMJ Case Reports FD BMJ Publishing Group Ltd SP bcr-2017-223340 DO 10.1136/bcr-2017-223340 VO 2017 A1 Laura Cannon A1 Eric Zwemer A1 John R Stephens YR 2017 UL http://casereports.bmj.com/content/2017/bcr-2017-223340.abstract AB