[Intrauterine growth of live-born twins in the area of Sibenik, Split and Zadar]. / Intrauterini rast zivorodenih blizanaca na podrucju Sibenika, Splita i Zadra.

By a retrospective analysis the authors studied live-born twins by gestation weeks and birth weight and height: there were 1,195 first-born and 1,189 second-born twins, all from three neighbouring Dalmatian towns (Split, Sibenik and Zadar). A common curve was worked out of the intrauterine growth of both the first and the second twins and a separate curve of each of them. The curves have shown that the twins' birth weight was increassing up to the 40th week of pregnancy; in the 41st week the curve already went down. The authors conclude that twin pregnancy should not last more than 40 weeks.