In the article that accompanies this editorial, Lu et al 5 conducted a systematic review on the use of instrumental variable (IV) methods in oncology comparative effectiveness research. The main ...

Our understanding of sex has come a long way. Aristotle theorized that heat during conception determined whether someone was born male or female. But while researchers have long moved on from that ...

When studying the health effects of probiotics and prebiotics, researchers often observe significant variation in responses to these gut-targeting interventions, both between individuals and between ...