South China Journal of Preventive Medicine ›› 2022, Vol. 48 ›› Issue (8): 1021-1024.doi: 10.12183/j.scjpm.2022.1021

• Field Research • Previous Articles     Next Articles

  

  • Received:2022-01-19 Online:2022-08-20 Published:2022-10-08

CLC Number: 

  • R446.5