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Hereditas|January 1, 1989
Effect of maternal age distribution and prenatal diagnosis on the population rates of Down syndrome--a comparative study of nineteen populationsB Källén, L B KnudsenActa Obstetricia Et Gynecologica Scandinavica|January 1, 1986
Intestinal bypass operation and pregnancy outcomeL B Knudsen, B KällénScandinavian Journal of Social Medicine|January 1, 1986
Twinning rates by residence in Denmark 1978 to 1982J Olsen, L B KnudsenUgeskrift for Laeger|May 1, 1989
[Abnormalities among newborn children born to immigrants in Denmark in the period 1983-1987]F Mac, L B KnudsenUgeskrift for Laeger|April 16, 1990
[Frequency of causes of death related to sudden infant death syndrome in Denmark during the period 1972-1983]L B Knudsen, K Helweg-LarsenAmerican Journal of Obstetrics and Gynecology|May 1, 1989
Ectopic pregnancy subsequent to laparoscopic sterilizationJ J Kjer, L B KnudsenUgeskrift for Laeger|March 20, 1989
[Extrauterine pregnancy after sterilization via a laparoscope]J J Kjer, L B KnudsenUgeskrift for Laeger|April 3, 1989
[Regional distribution of birth weights in Denmark during the period 1979-1983]S Juul, J Olsen, L B KnudsenBMJ (Clinical Research Ed.)|July 30, 1994
Risk of testicular cancer after vasectomy: cohort study of over 73,000 menH Møller, L B Knudsen, E LyngePageof 5