Cardiovascular and respiratory symptoms in relation to tobacco smoking. A study on American twins.
D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000150:complications; D001991:Bronchitis / Q000150:complications; D002318:Cardiovascular Diseases / Q000150:complications*; D003371:Cough / Q000150:complications; D004200:Diseases in Twins; D004812:Epidemiologic Methods; D006801:Humans; D008875:Middle Aged; D012140:Respiratory Tract Diseases / Q000150:complications*; D012907:Smoking / Q000150:complications*; D013548:Sweden; D014481:United States