Letter: Complication of acupuncture.
D015670:Acupuncture Therapy / Q000009:adverse effects*; D000368:Aged; D005547:Foreign Bodies / Q000209:etiology*; D006801:Humans; D008297:Male; D009339:Needles; D011030:Pneumothorax / Q000209:etiology; D011656:Pulmonary Emphysema / Q000601:surgery