1. Book of child care;Jolly,1977
2. Epidemiological aspects of the Northern Ireland study;Froggatt,1970
3. Choice of sleeping position for infants: possible association with cot death;Engelberts;Arch Dis Child,1990
4. Infant sleep position: a New Zealand survey;Hassall;NZ Med J,1985
5. Interaction between bedding and sleep position in the sudden infant death syndrome: a population based-control study;Fleming;Br Med J,1990