What is the primary advantage of using LED panels over handheld LED devices for full-body or large-area light therapy?
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A
LED panels deliver uniform irradiance over a large surface area simultaneously, reducing treatment time
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B
Handheld devices are always more powerful than panel systems
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C
LED panels use shorter wavelengths that penetrate deeper than handheld units
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D
Panels eliminate the need for any safety precautions during treatment