36 “multicenter study (topic)”/
37 experimental therapy/
38 methodology/
39 health care quality/
40 evaluation/
41 randomized controlled trial.mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer,
drug manufacturer, device trade name, keyword]
42 randomised controlled trial.mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer,
drug manufacturer, device trade name, keyword]
43 controlled clinical trial.mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, devicemanufacturer,
drug manufacturer, device trade name, keyword]
44 (clinical trial or clinical trial phase i or clinical trial phase ii or clinical trial phase iii or clinical trial phase iv).mp. [mp=title, abstract,
subject headings, heading word, drug trade name, original title, device manufacturer, drug manufacturer, device trade name, keyword]
Advanced Display
45 multicenter study.mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer,
drug manufacturer, device trade name, keyword]
46 multicentre study.mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title, device manufacturer,
drug manufacturer, device trade name, keyword]
47 (evaluation studies or comparative study).mp. [mp=title, abstract, subject headings, heading word, drug trade name, original title,
device manufacturer, drug manufacturer, device trade name, keyword]