[The COHb level of 1332 blood donors in Beijing].
D000328:Adult; D000367:Age Factors; D000393:Air Pollutants / Q000032:analysis; D001782:Blood Donors; D002248:Carbon Monoxide / Q000032:analysis; D002263:Carboxyhemoglobin / Q000032:analysis*; D002681:China; D005260:Female; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D008297:Male; D008875:Middle Aged
D000393:Air Pollutants; D006454:Hemoglobins; D002248:Carbon Monoxide; D002263:Carboxyhemoglobin