Aneuploidy is the most common chromosome abnormality in humans, and is the leading
genetic cause of miscarriage and congenital birth defects. Since the identification of the first …

Background The qualitative systematic review is a rapidly developing area of nursing research.
In order to present trustworthy, high‐quality recommendations, such reviews should be …

BACKGROUND: Exposure to ultraviolet radiation (from solar and nonsolar sources) is a risk
factor for skin cancer. OBJECTIVE: We sought to summarize recent estimates on sunburns, …

… Extensively rewritten, the Second Edition now includes new and expanded coverage
ofsemiconductor devices, the quantum Hall effect, quasicrystals, hightemperature superconductors …

Context Incidence of human immunodeficiency virus (HIV) in the United States has not been
directly measured. New assays that differentiate recent vs long-standing HIV infections …

An avian H5N1 influenza A virus (A/Hong Kong/156/97) was isolated from a tracheal aspirate
obtained from a 3-year-old child in Hong Kong with a fatal illness consistent with influenza. …

Hard pressed - the first synthetic diamonds Claims of the conversion of carbon to diamond
date back to 1880, but it was not until 1955 that the first reproducible synthesis was reported. …

Based on the existing literature, a model is presented that postulates a “dynamic reciprocity”
between the extracellular matrix (ECM) on the one hand and the cytoskeleton and the …

… This indicates that solvation of the ammonium ion through the N+-H bonds plays an important
role in determining base strength. All the tertiary amines gave an excellent correlation with …

Data are limited regarding cancer risk in human immunodeficiency virus (HIV)‐infected
persons with modest immunosuppression, before the onset of acquired immunodeficiency …