This paper describes the University of Sheffield's approach to CLEF 2018 eHealth Task 2: Technologically Assisted Reviews in Empirical Medicine. This task focuses on identifying relevant studies for systematic reviews. The University of Sheffield participated in both subtasks. Our approach to subtask 1 was to extract keywords from search protocols and form them into queries designed to retrieve relevant documents. Our approach to subtask 2 was to enrich queries with terms designed to identify diagnostic test accuracy studies and also by making use of relevance feedback. A total of six official runs were submitted
