- Publication venue
- Publication date
- 01/01/1980
- Field of study
- Publication venue
- Publication date
- 01/01/1981
- Field of study
- Publication venue
- Publication date
- 01/01/1977
- Field of study
- Publication venue
- 'BMJ'
- Publication date
- 01/01/1999
- Field of study
- Publication venue
- Unknown Publisher
- Publication date
- 01/01/2000
- Field of study
- Publication venue
- Publication date
- 01/01/1999
- Field of study
- Publication venue
- 'Elsevier BV'
- Publication date
- 01/01/2000
- Field of study