Table 1.

Studies’ references and researched cities by region and state

Regiona	Stateb	Number of researched cities	Studies’ references
N	AM	1	[24]
NE	BA	1	[25]
	CE	3	[24, 26, 27]
CW	DF	1	[28]
	GO	1	[24]
	MT	1	[29, 30]
SE	SP	11	[26, 31–39]
	RJ	2	[26, 40, 41]
	MG	2	[24, 42, 43]
S	RS	3	[44, 45]

^aN: North; NE: Northeast; CW: Center-West; SE: Southwest; S: South

^bAM: Amazonas; BA: Bahia; CE: Ceará; DF: Distrito Federal; GO: Goiás; MT: Mato Grosso; SP: São Paulo; RJ: Rio de Janeiro; MG: Minas Gerais; RS: Rio Grande do Sul