Association of Male Hypogonadism With Risk of Hospitalization for COVID-19.

Importance: Male sex is associated with severe COVID-19. It is not known whether the risk of hospitalization differs between men with hypogonadism, men with eugonadism, and those receiving testosterone therapy (TTh).

Objective: To compare COVID-19 hospitalization rates for men with hypogonadism who were not receiving TTh, men with eugonadism, and men receiving TTh.

SCAMP's stigmergic model of social conflict.

SCAMP (Social Causality using Agents with Multiple Perspectives) is one of four social simulators that generated socially realistic data for the Ground Truth program. Unlike the other three simulators, it is based on a computational principle, stigmergy, inspired by social insects. Using this approach, we modeled conflict in a nation-state inspired by the ongoing scenario in Syria.

Isolated spontaneous celiac artery dissection in a 47-year-old man with von Willebrand disease.

Isolated spontaneous dissection of the celiac artery is rare, and its occurrence without aortic dissection is even rarer. The typical symptom of this dissection is acute-onset abdominal pain. Complications of the condition include aneurysm formation, rupture, and abdominal-organ ischemia or infarction, especially in the liver or spleen.