http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bài giảng gồm 8 chương trình bày về khử trùng và chuẩn bị dụng cụ, sự chảy máu và phương pháp cầm máu, gây mê ...sa ruột và sa trực tràng.