Publications by authors named "T R Groff"

Obsessive-compulsive disorder (OCD), characterized by recurring obsessions and compulsions, affects 1-3% of the childhood population, often leading to severe impairment and reduced quality of life. Cognitive behavioral therapy (CBT) is well-documented as first choice treatment for pediatric OCD. Traditionally delivered face-to-face CBT has limitations in terms of accessibility, availability, and quality of delivery.

View Article and Find Full Text PDF

The most modifiable risk factor contributing to antibiotic resistance is the inappropriate prescription of antibiotics. Urinary tract infections (UTIs) are a common outpatient infection in the United States, with increasing antimicrobial resistance to uropathogens. As empiric UTI treatment is often appropriate, telemedicine offers an opportunity to enhance practice by adopting current clinical practice guidelines.

View Article and Find Full Text PDF

Direct imaging of gas giant exoplanets provides information on their atmospheres and the architectures of planetary systems. However, few planets have been detected in blind surveys with direct imaging. Using astrometry from the Gaia and Hipparcos spacecraft, we identified dynamical evidence for a gas giant planet around the nearby star HIP 99770.

View Article and Find Full Text PDF

We describe Leucocytozoon polynuclearis n. sp. (Haemosporida: Leucocytozoidae) from two North American woodpeckers, the northern flicker (Colaptes auratus Linnaeus) and white-headed woodpecker (Dryobates albolarvatus Boie, 1826), based on the morphology of its blood stages and portions of the mitochondrial cytochrome b gene.

View Article and Find Full Text PDF

Over the last decade, the vector-apodizing phase plate (vAPP) coronagraph has been developed from concept to on-sky application in many high-contrast imaging systems on 8 m class telescopes. The vAPP is a geometric-phase patterned coronagraph that is inherently broadband, and its manufacturing is enabled only by direct-write technology for liquid-crystal patterns. The vAPP generates two coronagraphic point spread functions (PSFs) that cancel starlight on opposite sides of the PSF and have opposite circular polarization states.

View Article and Find Full Text PDF