a prominent american epidemiologist dr. daniel halperin is encouraging international health experts to support behavior change as a primary tool in helping to prevent the spread of hiv.
he expresses his views in a new book tinderbox: how the west sparked the aids epidemic and how the world can finally overcome it. it¡¯s co-authored by craig timberg,
资源难易程度:★★★★★★★★★★★★★★★
高考资源网版权所有 ©2005-2014
未经许可，盗用或转载本站资料者，本站将追究其法律责任！
