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In this paper, four kinds of microfiber ball structure of different sizes, such as 330, 340, 350, and 360 µm were fabricated by single-mode fiber and multimode fiber, respectively. To test its performance, the reflected intensity was measured, and the results showed that the microfiber ball with the largest diameter of 360 µm had the maximum reflected intensity. The 360 µm microfiber ball was characterized by scanning electron microscope. This indicates that compared with a small-diameter microfiber ball, large-diameter microspheres are

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Objectives Recommendations for vitamin D (VitD) intake and target serum levels of 25(OH)D in preterm infants are diverse. We hypothesized that preterm infants with low birth weight (BW) have low dietary intake of VitD and therefore should be supplemented with higher amounts of VitD. Methods Infants with BW 2 kg. Nevertheless, only 2 of 25 infants with insufficient intake of VitD demonstrated insufficient levels of serum 25(OH)D. No case of vitamin D excess was recorded. Conclusions Increased supplementation of VitD (600 IU/d) for premat