Ultrasound Screening and Perinatal Mortality: Controlled Trial of Systematic One-stage Screening in Pregnancy The Helsinki Ultrasound Trial

Issn Print: 0029-7828

Publication Date: 1991/07/01

AULlKKl SAARI-KEMPPAINEN; OLAVl KARJALAINEN; PEKKA YLOSTALO; OLLl P. HEINONEN


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