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The chemicals in cigarettes, such as nicotine and tar, can delay blood flow and oxygen delivery to the area, impeding proper healing

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10231.103 (one of 24 enumerated qualifying conditions including anxiety disorders, autism, cancer, Crohn's disease, epilepsy, multiple sclerosis, neuropathies, opioid use disorder for which conventional treatments are ineffective, Parkinson's disease, post-traumatic stress disorder, severe chronic or intractable pain, terminal illness, Tourette syndrome, and others), and a brief update on symptoms and treatment response since your last certification