Authors: KNUDSEN LB KALLEN AJB

Citation: Lb. Knudsen et Ajb. Kallen, INFANT-MORTALITY IN DENMARK AND SWEDEN - A COMPARISON BASED ON DATA IN 2 NATIONAL REGISTRIES, European journal of obstetrics, gynecology, and reproductive biology, 75(1), 1997, pp. 85-90

Authors: LICHTENSTEIN P OLAUSSON PO KALLEN AJB

Citation: P. Lichtenstein et al., TWIN BIRTHS TO MOTHERS WHO ARE TWINS - A REGISTRY BASED STUDY, BMJ. British medical journal, 312(7035), 1996, pp. 879-881

Authors: KALLEN AJB

Citation: Ajb. Kallen, MATERNAL CARBAMAZEPINE AND INFANT SPINA-BIFIDA, Reproductive toxicology, 8(3), 1994, pp. 203-205

Authors: GUNNARSKOG J KALLEN AJB

Citation: J. Gunnarskog et Ajb. Kallen, DRUG INTOXICATION DURING PREGNANCY - A STUDY WITH CENTRAL REGISTRIES, Reproductive toxicology, 7(2), 1993, pp. 117-121