Accuracy of ChatGPT-3.5, ChatGPT-4o, Copilot, Gemini, Claude, and Perplexity in advising on lumbosacral radicular pain against clinical practice guidelines: cross-sectional study. - Giacomo Rossettini; Silvia Bargeri; Chad Cook; Stefania Guida; Alvisa Palese; Lia Rodeghiero; Paolo Pillastrini; Andrea Turolla; Greta Castellini; Silvia Gianola (Frontiers Digit. Health, 2025)