Authors: AMMALA P HILLESMAA VK LIUKKONEN S SAISTO T TERAMO K VONKOSKULL H

Citation: P. Ammala et al., RANDOMIZED TRIAL COMPARING 1ST-TRIMESTER TRANSCERVICAL CHORIONIC VILLUS SAMPLING AND 2ND-TRIMESTER AMNIOCENTESIS, Prenatal diagnosis, 13(10), 1993, pp. 919-927