Navigating the challenge of patient selection and scales to measure outcomes in ketamine trials for treatment-resistant depression.

The letter about the article "Ketamine for treatment-resistant major depressive disorder: Double-blind active-controlled crossover study" that discusses some points about methodology, outcome measures, and results.
Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.