“…The common thread which unites these and other papers [18,60,64,67,74,80,82] is the issue of the perinatal mortality rate in twins, its causes [14,28] and the means for its reduction [25,39,69,82]. An additional concern, although not voiced as frequently, is the cost of providing neonatal care to large numbers of preterm newborns [4,65,72,73,82].…”