APA (7th ed.) Citation
CHEN, H., & ET AL. SMOKING DURATION, INTENSITY, AND RISK OF PARKINSON DISEASE.
Chicago Style (17th ed.) Citation
CHEN, H., and ET AL. SMOKING DURATION, INTENSITY, AND RISK OF PARKINSON DISEASE.
MLA (9th ed.) Citation
CHEN, H., and ET AL. SMOKING DURATION, INTENSITY, AND RISK OF PARKINSON DISEASE.
Warning: These citations may not always be 100% accurate.