Preterm infants ( birth weight @-@g ) were randomized to receive parenteral nutrition with MOSF ( @ % Medium-chain triglycerides , @ % Olive oil , @ % Soybean oil , @ % Fish oil ) or S ( S , @ % Soybean oil ) both at two levels of fat intake : @ or @ gkg ( -@ ) d ( -@ ) , named @ Fat and @ Fat respectively .