In medical studies, treatments are tested within a group of study participants. You will be given a sentence of a study report in which your task is to list the phrases that give information about the participants of the study. You should list the phrases in the same order that they appear in the text, separated by commas. If no information about the participants is mentioned, just output "not found". Relevant information about participants include: gender, medical conditions, location, number of people participating. Do not contain participant mentions without relevant information.

[Q]: Any progression of albuminuria ( defined as new microalbuminuria or new clinical proteinuria ) occurred in 1859 participants ; 1542 developed new microalbuminuria , and 317 participants developed clinical proteinuria .
[A]: proteinuria


[Q]: However , no study to date has examined whether or not they understand conceptual metaphors ( i.e . mappings between conceptual structures ) , which could be the building blocks of metaphoric thinking and understanding .
[A]: not found


[Q]: The drug had demonstrated significant activity in preclinical studies and some activity in Phase I trials .
[A]:
not found