to provide a more detailed assessment of the growth of twins , the individual second trimester growth patterns of six fetal parameters [ hc , ac , fdl , thc , head cube ( a ) and abdominal cube ( b ) ] were studied in fourteen sets of normal twins ( six monozygotic and eight dizygotic ) and sixteen normal singletons using the rossavik growth model [ p = c ( t ) ( k + s ( t ) ] .
C0027361
individual
C0015965
fetal