Supplemental Materials for "New Strategy for Liquid Nitrogen Treatment: Dual Cotton Swab Combined Cryotherapy"

We have provided an instructional video. We propose an optimized approach that combines large (8 - 10 mm) and small (3 - 5 mm) cotton swabs for liquid nitrogen cryotherapy.我们已提供一份教学视频。我们提出了一种结合大号（8-10 mm）与小号（3-5 mm）棉签的液氮冷冻疗法优化方案。