NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 12,2001, Pages 757-758, doi:10.3760/j:issn:0376-2491.2001.12.017
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 12,2001, Pages 715-718, doi:10.3760/j:issn:0376-2491.2001.12.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 12,2001, Pages 759-760, doi:10.3760/j:issn:0376-2491.2001.12.019
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 12,2001, Pages 737-739, doi:10.3760/j:issn:0376-2491.2001.12.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 12,2001, Pages 764-765, doi:10.3760/j:issn:0376-2491.2001.12.022