The PEPFAR scientific advisory board met this week to discuss implementation science; reaching key populations, such as drug users and men who have sex with men; and coordinating HIV testing, prevention, treatment and care efforts, the Center for Global Health Policy's "Science Speaks" blog reports. "When [efficiency, impact, and the relevance of targets] are weighed against intentions and costs, the discipline at work is called 'implementation science,' and that is the science, PEPFAR leadership is hoping, that will bring the possibilities of biomedical advances and commitment to fruition," the blog writes. U.S. Global AIDS Coordinator Ambassador Eric Goosby discussed the disconnect between the people planning HIV/AIDS services and those for whom services are intended, according to the blog (Barton, 10/4).