Protocol for a systematic review of outcomes from microsurgical free-tissue transfer performed on short-term collaborative surgical trips in low-income and middle-income countries

Table 2 Population, Intervention, Comparison, Outcome (PICO)

Population	Intervention	Comparator	Outcomes
Patients operated on during STSCs	Reconstructive surgery by microvascular free-tissue transfer	Data from the UK National Flap Registry [9]	Rate of complications
In low- and middle-income countries or low-resource health environments	Performed during a visiting surgical mission		Nature of complications
Children and adults to be included	This will include both loupes and microscope magnification		Rate of return to theatre
			Rate of free flap salvage
			Nature of attempted salvage
			Measures of cost-effectiveness
			Assessments of impact on local training
			Impact on burden of disease/waiting list
			Long-term ‘legacy’—e.g. establishment of a local microsurgery unit or fellowship from host to visiting institution