Table 1.

Randomized controlled trials (RCTs) for the 5-grass tablet and the allergoid mix

	RCT
5-grass tablet	Didier 2007 [18]
	Wahn 2009 [19]
	Didier 2011 [20]
	Cox 2012 [21]
Allergoid mix	Pfaar 2012 (Depiquick) [22]
	Corrigan 2009 (Allergovit) [23]
	Drachenberg 2001 (Pollinex) [24]
	Du Buske 2011 (Pollinex) [25]
	Brewczynski 1999 (Purethal) [26]