Table 1.

Key Questions of the Systematic Review

1	Have STMMs been critically analyzed with respect to normative values of volunteerism, altruism and philanthropy?
2	Have elements of professionalization of STMM activity emerged?
3	Have authors addressed basic economic principles that govern transactions between parties, in this context, between physicians and recipients of care, or other market mechanisms in STMM activity?
4	Are there data on personal costs or cost-effectiveness of STMMs?
5	Spill-over effects: Do physicians view STMMS as foreign aid? Do participating physicians view STMMs as diplomacy or as part of strategic soft power?