[Passive smokers].
D000328:Adult; D002263:Carboxyhemoglobin / Q000378:metabolism*; D005260:Female; D006454:Hemoglobins / Q000378:metabolism*; D006801:Humans; D008297:Male; D014028:Tobacco Smoke Pollution / Q000009:adverse effects
D006454:Hemoglobins; D014028:Tobacco Smoke Pollution; D002263:Carboxyhemoglobin
Fumadores pasivos.