PT  - JOURNAL ARTICLE
ED - BMJ Publishing Group Ltd
TI  - Exceptionally difficult
AID  - 10.1136/dtb.2011.02.0064
DP  - 2011 Nov 01
TA  - Drug and Therapeutics Bulletin
PG  - 121--121
VI  - 49
IP  - 11
4099  - http://dtb.bmj.com/content/49/11/121.short
4100  - http://dtb.bmj.com/content/49/11/121.full
SO  - Drug Ther Bull2011 Nov 01; 49