Can Variation in Costs for Cardiovascular Procedures Be Attributed to Inefficiency in Care Delivery? Challenges in Causality, Data Availability, and the Need for Price Transparency by Waseem Nosair, MD, MPH, Morgana Mongraw-Chaffin, PhD, MPH, William S. Weintraub, MD

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The Impact of Liberalized Concealed Carry Laws on State Homicide Rates by K. Alexander Adams

“…This study analyzes the relationship between these laws, total homicide, and firearm homicide using panel data from 1980 to 2018 across all 50 states and the District of Columbia. The analysis uses multivariate regression with state and time-fixed effects and applies a general-to-specific procedure to select control variables. …”
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Radiation dose and fraction in immunotherapy: one-size regimen does not fit all settings, so how does one choose? by Marka Crittenden, Sandra Demaria, C Norman Coleman, Jonathan Schoenfeld, Arta Monjazeb, Samir Khleif, Seema Gupta, Andrew Sikora, Zachary Morris, Chandan Guha, Stephen Shiao, Silvia Chiara Formenti, Bhadrasain Vikram, Mansoor M Ahmed

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Identifying Priority Areas for Increasing the Supply of Medication-Assisted Treatments for Opioid Use Disorder: A Geospatial Approach by Michael Topmiller, Peter J. Mallow, Aaron T. Vissman, Jene Grandmont

“…**Results:** We identified twenty-nine opioid dependence priority areas, eleven unmet treatment need priority areas, and seven low MAT capacity priority areas, located across the US, including southeastern Ohio, western Indiana, the District of Columbia, New England, and northern and southern California. …”
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Observational research in epidemic settings: a roadmap to reform by Marc Lipsitch, Nicholas Evans, Alexandra L Phelan, Stephany N Duda, Annette Rid, Colin J Carlson, Jennifer B Rosen, Natalie E Dean, John Barugahare, Maya B Mathur, Emily E Ricotta, Fausto A Bustos Carrillo, Samuel Angelli-Nichols, Adia Benton, Emma Chang-Rabley, Lisa Federer, Mary-Margaret A Fill, Elizabeth C LeRoy, Natalie M Linton, Lauren Sauer, Sheena G Sullivan, Mackenzie Zendt

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