Amount of greenhouse gases in atmosphere reaches record high The concentrations of the 43 most important greenhouse gases are at unprecedented, record-high levels compared to the last higher than ever in the past 800,000 years.
Is screening for sexually transmitted infections as part of HIV care cost-effective in the Netherlands? Routine screening for anorectal chlamydia among HIV-positive men who have sex with men (MSM) could avert further spread of chlamydia and HIV in the total MSM population.