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Surgical and anesthetic techniques have evolved to allow a growing number of older adults to undergo surgery, and current estimates are that 50% of Americans over the age of 65 years old will have an operation. However, as the knowledge regarding perioperative care of the elderly surgical patient grows, so do the questions. In this edition, each chapter includes a section entitled "Gaps in Our Knowledge," meant to highlight areas in which research is needed, as well as hopefully inspire readers to begin solving some of these questions themselves. Building upon the strong foundation of the...

Malicious email is, simply put, email with a malicious purpose. The malicious purpose could be fraud, theft, espionage, or malware injection. The processes by which email execute the malicious activity vary widely, from fully manual (e.g. human-directed) to fully automated. One example of a malicious email is one that contains an attachment which the recipient is directed to open. When the attachment is opened, malicious software is installed on the recipient's computer. Because malicious email can vary so broadly in form and function, automated detection is only marginally helpful. The...