TY  - RPRT
TI  - [A morbidity information system based on school absenteeism].
AU  - L Mitjans
AU  - C Pons
AU  - O Zurriaga
AU  - H Vanaclocha
AU  - C Moya
DO  - 10.1016/s0213-9111(90)70989-2
UR  - https://pubmed.ncbi.nlm.nih.gov/2262283/
ID  - 2262283
ER  -