OBJECTIVES To determine the survival rates for infants weighing 500 - 1 499 g according to birth weight (BW) and gestational age (GA). DESIGN This was a retrospective cohort study. Pregnancy and delivery data were collected soon after birth and neonatal data at discharge or at death. SETTING Chris Hani Baragwanath Hospital (CHBH), a public-sector referral hospital, affiliated to the Univers...

Ischemic stroke is among the leading causes of death and disability in the United States and many other industrialized nations. Approximately 500 000 people in the United States have a new or recurrent stroke each year, and approximately 150 000 will die as a result. There are more than 3 000 000 survivors of stroke in the United States. The annual economic costs of stroke in the United States ...

BACKGROUND Greater adiposity is associated with higher blood pressure. Substantial uncertainty remains, however, about which measures of adiposity most strongly predict blood pressure and whether these associations differ materially between populations. METHODS We examined cross-sectional data on 500 000 adults recruited from 10 diverse localities across China during 2004-08. Multiple linear ...

We report an infrared spectroscopy study of the axion topological insulator candidate EuIn$_2$As$_2$ for which Eu moments exhibit A-type antiferromagnetic (AFM) order below $T_N \simeq 18 \mathrm{K}$. The low energy response is composed a weak Drude peak at origin, pronounced infrared-active phonon mode 185 cm$^{-1}$ and free carrier plasma edge around 600 cm$^{-1}$. interband transitions start...

TO THE EDITOR—Brucellosis is a common zoonotic infectious disease, with >500 000 new cases reported annually worldwide [1, 2]. Brucellosis is caused by the in-tracellular bacterial pathogen Brucella.