JAMA Internal Medicine – Improving Health and Health Care

Research

Adverse Events Associated With the Addition of Aspirin to Direct Oral Anticoagulant Therapy
Jordan K. Schaefer, MD; et al.

Original Investigation
online first
Jordan K. Schaefer, MD; et al.
Association of US Food and Drug Administration Removal of Indications for Use of Oral Quinolones With Prescribing Trends
Phuong T. Tran, MPH; et al.

Original Investigation
online first
Phuong T. Tran, MPH; et al.
Assessment of Methylene Chloride–Related Fatalities in the United States, 1980-2018
Anh Hoang, BS; et al.

Original Investigation
online first open access
Anh Hoang, BS; et al.

Invited Commentary
Systematic Assessment of Online Health Information for Coronary Revascularization
Irbaz Hameed, MD; et al.

Research Letter
online first
Irbaz Hameed, MD; et al.
Fitted Filtration Efficiency of Double Masking During the COVID-19 Pandemic
Emily E. Sickbert-Bennett, PhD, MS; et al.

Research Letter
online first free access
Emily E. Sickbert-Bennett, PhD, MS; et al.

Opinion

A Tale of 2 Viruses and 2 Vaccines—Perspectives From 2 Stages of Life
A. Mark Clarfield, MD

Perspective
online first free access
A. Mark Clarfield, MD
Deaths From Methylene Chloride Exposure
Kenneth Rosenman, MD

Invited Commentary
online first
Kenneth Rosenman, MD
Time-Limited Trials and Potentially Nonbeneficial Treatment in the ICU
Richard E. Leiter, MD, MA; et al.

Invited Commentary
online first has multimedia
Richard E. Leiter, MD, MA; et al.
Lessons From the Success of COVID-19 Control in Taiwan
Robert Steinbrook, MD

Editor's Note
online first free access
Robert Steinbrook, MD
Media Representation of the Benefits and Harms of Early Testing
Tiffany S. Doherty, PhD; et al.

Invited Commentary
online first
Tiffany S. Doherty, PhD; et al.

Invited Commentary

Clinical Review & Education

Electrocardiographic Findings in an Unresponsive Patient
Laszlo Littmann, MD, PhD

Challenges in Clinical Electrocardiography
online first
Laszlo Littmann, MD, PhD
Everything That Wenckebachs Is Not the AV Node
Tharian S. Cherian, MD; et al.

Challenges in Clinical Electrocardiography
online first
Tharian S. Cherian, MD; et al.
Digoxin-Induced Bidirectional Ventricular Tachycardia in a Patient With Hypokalemia
Kristopher S. Pfirman, DO; et al.

Challenges in Clinical Electrocardiography
online first
Kristopher S. Pfirman, DO; et al.
An Unusual Case of Chest Pain With Wide Complex Arrhythmia
Usman A. Hasnie, MD; et al.

Challenges in Clinical Electrocardiography

Usman A. Hasnie, MD; et al.
Atrioventricular Dissociation in a Heart Transplant Recipient
Joel Morillo, MD; et al.

Challenges in Clinical Electrocardiography

Joel Morillo, MD; et al.