# 5	301	#4 AND #3 Databases=SCI‐EXPANDED, CPCI‐S Timespan=All Years Lemmatization=On
# 4	1,300,160	Topic=(random* or placebo* or crossover* or "cross over" or allocat* or ((singl* or doubl*) NEAR/1 blind*)) OR Title=(trial) Databases=SCI‐EXPANDED, CPCI‐S Timespan=All Years Lemmatization=On
# 3	981	#2 AND #1 Databases=SCI‐EXPANDED, CPCI‐S Timespan=All Years Lemmatization=On
# 2	88,201	Topic=(((health or "health care" or healthcare or hospital or medical) NEAR/2 (personnel or worker* or employee* or staff or professional*)) or doctor* or physician* or clinician* or nurs* or paramedic* or "allied health") AND Topic=(hospital* or hospice* or "residential facilities" or "residential facility" or "nursing homes" or "nursing home" or "aged care" or "old peoples home" or "old peoples homes" or (institution* NEAR/3 elderly) or (("long term" or "long stay") NEAR/3 (ward* or facilit* or hospital*))) Databases=SCI‐EXPANDED, CPCI‐S Timespan=All Years Lemmatization=On
# 1	16,674	Topic=((influenza* or flu) NEAR/4 (vaccin* or immunis* or immuniz*)) Databases=SCI‐EXPANDED, CPCI‐S Timespan=All Years Lemmatization=On