PT  - JOURNAL ARTICLE
AU  - A D Hargreaves
AU  - O el Hag
AU  - N A Boon
TI  - Head-up tilt testing. The balance of evidence.
AID  - 10.1136/hrt.72.3.216
DP  - 1994 Sep 01
TA  - British Heart Journal
PG  - 216--217
VI  - 72
IP  - 3
4099  - http://heart.bmj.com/content/72/3/216.short
4100  - http://heart.bmj.com/content/72/3/216.full
SO  - Heart1994 Sep 01; 72