Set	Searches
# 4	#3 AND #2 AND #1 Indexes=SCI‐EXPANDED, SSCI, A&HCI, CPCI‐S, CPCI‐SSH, ESCI Timespan=All years
# 3	TOPIC: (ultrasound* or "ultra sound*" or sonogra* or ultrasonogra* or "ultra sonogra*" or CUS or ultrasonic or echotomograph* or echograph*) OR TITLE: (ultrasound* or "ultra sound*" or sonogra* or ultrasonogra* or "ultra sonogra*" or CUS or ultrasonic or echotomograph* or echograph*)
# 2	TOPIC: (radiograph* or roentgen* or radiogram* or radiology or "chest film*" or CXR or "x‐ray*" or "x ray*" or xray*) OR TITLE: (radiograph* or roentgen* or radiogram* or radiology or "chest film*" or CXR or "x‐ray*" or "x ray*" or xray*)
# 1	TOPIC: (pneumothora* or "pneumo thora*") OR TITLE: (pneumothora* or "pneumo thora*") OR TOPIC: (PTX) OR TITLE: (PTX)