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© 1975 Oxford University Press

research-article

Surveillance of Congenital Malformations and Other Conditions of the Newborn*

TOR BJERKEDAL1, and LEIV S. BAKKETEIG2

1 Professor, Head of the Institute of Hygiene and Social Medicine, University of Bergen Bergen, Norway
2 Assistant Professor in Social Medicine, Institute of Hygiene and Social Medicine, University of Bergen Bergen, Norway

Reprint requests should be addressed to Drs. Bjerkedal

A brief description is given of a birth defects monitoring system in operation on a monthly basis in Norway since 1 January 1971. The system has disclosed apparent epidemic increases in congenital dislocation of hip and anomalies of the limbs, caused by changes in registration practice. An increase in the registration of anomalies of the uro-genital system, that started in the autumn of 1972, is currently being investigated in depth through a case-control study covering all cases of hypospadias and undescended testicles that are registered in the total population of births in Norway. However, this population is too small to provide a quick answer to urgent questions. To overcome this obstacle international collaboration is essential.

Received 16 September 1974


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