Editorial: On the fringes of smoke rings.
D003276:Contraceptives, Oral / Q000009:adverse effects; D005260:Female; D006801:Humans; D000860:Hypoxia / Q000209:etiology; D007964:Leukocytosis / Q000209:etiology*; D008297:Male; D009765:Obesity / Q000150:complications; D011086:Polycythemia / Q000209:etiology*; D012907:Smoking / Q000150:complications*
D003276:Contraceptives, Oral