Journal List > Yonsei Med J > v.18(1) > 1028078
Yonsei Medical Journal 1977; 18(1): 64-74.
Published online: 20 February 2002
DOI: https://doi.org/10.3349/ymj.1977.18.1.64
Department of Preventive Medicine at Pablic Health, Yonsei University College of Medicine, Seoul, Korea.
Copyright © 1977 The Yonsei University College of Medicine