CHINA POULTRY, Volume 25, Issue 24,2003, Pages 11-12, doi:10.3969/j.issn.1004-6364.2003.24.004
INTERNATIONAL MEDICINE & HEALTH GUIDANCE NEWS, Volume 9, Issue 24,2003, Pages 45-45, doi:10.3760/cma.j.issn.1007-1245.2003.24.032
CHINESE NURSING RESEARCH, Volume 17, Issue 24,2003, Pages 1438-1439, doi:10.3969/j.issn.1009-6493.2003.24.009
JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY, Volume 24, Issue 24,2003, Pages 2269-2271, doi:10.3321/j.issn:1000-2790.2003.24.018