But such speculation needs to be tested  we cant just rely on an educated guess. Get CNN Health's weekly newsletter Sign up here to get The Results Are In with Dr. Sanjay Gupta every Tuesday from the CNN Health team. Additionally, more research is needed to determine whether similar findings would emerge among a larger group of patients in other parts of the world. However, data were still being collected in randomized controlled trials  the gold standard  to study the safety and effectiveness of the treatment. The research involved 464 adults with moderate Covid-19 who were admitted to hospitals in India between April and July.
The research involved four navels, three oak trees, and two giraffes.
( z0 involve :ARG1 ( z1 and :op ( z2 asshole :quant 4 ) :op ( z3 tree :quant 3 :mod ( z4 oak ) ) :op ( z5 giraffe :quant 2 ) ) :ARG2 ( z6 research ) )
(z0 / involve-01
    :ARG1 (z1 / and
              :op1 (z2 / asshole
                       :quant 4)
              :op2 (z3 / tree
                       :quant 3
                       :mod (z4 / oak))
              :op3 (z5 / giraffe
                       :quant 2))
    :ARG2 (z6 / research-01))
The research involved four navels , three oak trees , and two giraffes .
z0 :ARG2 z6
z2 :quant 2
z3 :mod z4
z3 :quant 1
z1 :op2 z3
z1 :op1 z2
z0 :ARG1 z1
z5 :quant 0
z1 :op3 z5