Zaheer, A., Anwer, M., Kuntal, M., Wadhwani, V. R., Shaikh, U. I., Shrestha, J., Singh, G. J., Dod, V. G., Kallam, D. B., Ali, Z., Bukhari, S. M. R., Gupta, A., Patan, S., Siddiqi, A. R. (2026). Evaluating reliability of large language models for patient queries: Concordance with NCCN invasive breast cancer guideline using ChatGPT, DeepSeek, and Gemini.. Journal of Clinical Oncology. https://doi.org/10.1200/jco.2026.44.16_suppl.e12550