PT  - JOURNAL ARTICLE
AU  - O'Cathain, A
AU  - Munro, J F
AU  - Nicholl, J P
AU  - Knowles, E
TI  - How helpful is NHS Direct? Postal survey of callers
AID  - 10.1136/bmj.320.7241.1035
DP  - 2000 Apr 15
TA  - BMJ
PG  - 1035
VI  - 320
IP  - 7241
4099  - http://www.bmj.com/content/320/7241/1035.short
4100  - http://www.bmj.com/content/320/7241/1035.full
SO  - BMJ2000 Apr 15; 320