1. Central Bureau of Statistics (CBS) Department of Health Statistics: Year Statistics 1979 – 1985. Voorburg, The Netherlands.
2. Dutch Center for Health Care Information (SIG): Year Books of Hospital Admissions 1979 – 1985. Utrecht, The Netherlands.
3. Drown versus near-drown: A discussion of definitions;Modell;Crit Care Med,1981
4. Converting drowning to near-drowning;Redding;Crit Care Med,1981