Control group for a case-control study, hospital or population?

Main Author: Perpustakaan UGM, i-lib
Format: Article NonPeerReviewed
Terbitan: [Yogyakarta] : Universitas Gadjah Mada , 1987
Subjects:
Online Access: https://repository.ugm.ac.id/26100/
http://i-lib.ugm.ac.id/jurnal/download.php?dataId=9113
Daftar Isi:
  • keywords: disease under study, central helath facility