On Tuesday, the American College of Surgeons released a surgical protocol for operating on patients with possible or confirmed cases of Ebola. Written by Sherry M. Wren, professor of surgery at Stanford, and Adam Kushner, an associate at Johns Hopkins Bloomberg School of Public Health, the protocol calls for special surgery equipment, including double gloves, full face shields and surgical hoods. Additionally surgeons must have what is termed as "AAMI Level 4" surgical gowns and drapes, which are made of material that have been proven to be impervious to liquid and viral penetration.