Comparison of analgesic effectiveness and safety of vapocoolant spray and eutectic mixture of local anaesthetic cream for spinal anaesthesia injection in a tertiary care hospital of Uttarakhand: A randomized controlled trial - Mohit Kumar; Rena Gurung; Ishita Bahukhandi; Himanshu Prince; Neha Kathor; Bhawna Saini (Indian Journal of Clinical Anaesthesia, 2026)