Medical memo. Secondhand smoke: unsafe in any amount.
D003326:Coronary Circulation / Q000502:physiology*; D006331:Heart Diseases / Q000209:etiology; D006801:Humans; D012907:Smoking / Q000503:physiopathology; D014028:Tobacco Smoke Pollution / Q000009:adverse effects*
D014028:Tobacco Smoke Pollution