Fixing a heart valve حسب Nature Research (16552612)

"…And yet, surgeons are often unwilling to repair the mitral valve, because the procedure is more challenging than valve replacement. As Antune points out, however, the proportion of repaired valves that need to be replaced later on decreases with surgeons' increasing experience of the procedure. …"

Cross-Cultural Awareness and Attitudes Toward Threatened Animal Species حسب Jennifer Bruder (323066)

"…<p dir="ltr">The preservation of our planet’s decreasing biodiversity is a global challenge. Human attitudes and preferences toward animals have profound impacts on conservation policies and decisions. …"