Search alternatives:
"retrospective case-control study" » "retrospective _-control study", "retrospective cohort-control study", "retrospective single-control study"
"retrospective case-controlled study" » "retrospective _-controlled study", "retrospective cohort-controlled study", "retrospective single-controlled study"
"retrospective case-control study" » "retrospective _-control study", "retrospective cohort-control study", "retrospective single-control study"
"retrospective case-controlled study" » "retrospective _-controlled study", "retrospective cohort-controlled study", "retrospective single-controlled study"
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