Ventilatory function in pregancy.
D000293:Adolescent; D000328:Adult; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D012119:Respiration; D012907:Smoking / Q000503:physiopathology; D013147:Spirometry; D013223:Statistics as Topic; D013997:Time Factors; D014797:Vital Capacity