References
- Haynes W Jr Krstulovic VJ et al. Smoking habit and incidence of respiratory tract infections in a group of adolescent males Am Rev Respir Dis 1965 93 730 735
- Parnell , JL , Anderson , DO and Kinnis , C . 1966 . Cigarette smoking and respiratory infections in a class of student nurses . N Engl J Med , 274 : 979 – 984 .
- Peters , JM and Ferris , BG Jr . 1967 . Smoking and morbidity in a college-age group . Am Rev Respir Dis , 95 : 783 – 789 .
- Finklea , JF , Hasselblad , V and Sandfier , SH . 1970 . Cigarette smoking and acute noninfluenzal respiratory disease in military cadets . Am J Epidemiol , 93 : 457 – 462 .
- Spiegel , MR . 1961 . Theory and Problems of Statistics , 196 New York : Schaum Publishing Co .
- Siegel , S . 1956 . Nonparametric Statistics for the Behavior Sciences , 127 New York : McGraw-Hill Book Co Inc .
- Johnson , PO and Jackson , RWB . 1959 . Modern Statistical Methods: Descriptive and Inductive , 359 Chicago : Rand McNally & Co .
- Peters , JM and Ferris , BG Jr . 1967 . Smoking, pulmonary function and respiratory symptoms in a college-age group . Am Rev Respir Dis , 95 : 774 – 782 .
- Holland , WW and Elliott , A . 1968 . Cigarette smoking, respiratory symptoms, and anti-smoking propaganda . Lancet , 1 : 41 – 43 .
- Addington WW Mogg K et al. The association of cigarette smoking with respiratory symptoms and pulmonary function in a group of high school students Okla State Med Assoc J 1970 63 525 529