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Informed consent was obtained from the parents of participating schoolchildren in writing before they were asked to complete the questionnaire (File S1).
All participating schoolchildren voluntarily entered the study after informed written consent was obtained from the children's parents.
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In 1954 the March of Dimes ran field trials of the Salk vaccine with close to two million schoolchildren participating, and many adult volunteers helping to transport, deliver and later tabulate data, making it the largest peacetime mobilization of volunteers in history.
The selected homes were purposively from those schoolchildren participating in the structural questionnaire at school.
Among the 515 schoolchildren participating, 363 (70.5%) were enrolled in public schools; 152 (29.5%) in private schools, and 290 (56.3%) of the children were girls.
Last summer, a few days after attending a Live Earth concert at Giants Stadium, Ms. Lee walked through the Princeton University campus, where hundreds of schoolchildren were participating in summer camp programs.
Real schoolchildren participated throughout the movie's filming.
Many of the RFK schoolchildren participated in the mural-making, suggesting themes for the artists' works or serving as production assistants.
Schoolchildren participated in the survey on a voluntary basis.
A total of 402 primary schoolchildren participated in the survey (Table 2).
Eighteen children with DD and 20 typically achieving schoolchildren participated in this fMRI-study.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com