Authors:
AK Daly, DJ Thomas, J Cooper, WR Pearson, DE Neal, JR Idle
Journal name: 
BMJ
Citation info: 
307(6902):481-482
DOI: 
http://doi.org/10.1136/bmj.307.6902.481
E-pub date: 
31 Jul 1993
Users with this publication listed: 
David Neal