I skimmed the article but it seems to contradict itself:
> Soy, brown rice, pea, corn, and potato protein have essential amino acid contents that meet the requirements as recommended by the WHO/FAO/UNU (WHO/FAO/UNU Expert Consultation 2007) (Fig. 2).
> Soy, brown rice, pea, corn, and potato protein have essential amino acid contents that meet the requirements as recommended by the WHO/FAO/UNU (WHO/FAO/UNU Expert Consultation 2007) (Fig. 2).