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Untreated vitamin B12 deficiency can cause severe health problems, including anemia, nerve damage, and cardiovascular diseases
Ethical approval This study was approved by the Ethics Committee of the Plastic Surgery Hospital (Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
These interventions can preserve our capacity to lead active, beautiful lives
Jungnickel et al
Much of the most cited evidence comes from wound healing contexts and cell culture studies rather than cosmetic outcomes measured in living skin over months
Eugene et al., 2002)
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