<p>Sample characteristics<sup><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0105606#nt101" target="_blank">*</a></sup>.</p
<p>Characteristics at enrollment<sup><a href="http://www.plosone.org/article/info:doi/10.1371/journa...
<p>Sample characteristics reported by parents (N = 779)<sup><a href="http://www.plosone.org/article/...
<p>Demographic Characteristics of the Participants<a href="http://www.plosone.org/article/info:doi/1...
<p>Sample characteristics (weighted data, n = 261)<a href="http://www.plosone.org/article/info:doi/1...
<p>Characteristics of the study population<sup><a href="http://www.plosone.org/article/info:doi/10.1...
<p>Characteristics of the study population<sup><a href="http://www.plosone.org/article/info:doi/10.1...
<p>Characteristics of the study population <a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>Characteristics of the Study Cohort<sup><a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>Background Characteristics<sup><a href="http://www.plosone.org/article/info:doi/10.1371/journal.p...
<p>Baseline characteristics <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.01...
<p>Characteristics of the study population <a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>Characteristics<sup><a href="http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.1...
<p>* All data are expressed as number (%)</p><p>Characteristics of the study populations<sup><a href...
<p>Characteristics of the study populations<a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>See also [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0135545#pone.0135...
<p>Characteristics at enrollment<sup><a href="http://www.plosone.org/article/info:doi/10.1371/journa...
<p>Sample characteristics reported by parents (N = 779)<sup><a href="http://www.plosone.org/article/...
<p>Demographic Characteristics of the Participants<a href="http://www.plosone.org/article/info:doi/1...
<p>Sample characteristics (weighted data, n = 261)<a href="http://www.plosone.org/article/info:doi/1...
<p>Characteristics of the study population<sup><a href="http://www.plosone.org/article/info:doi/10.1...
<p>Characteristics of the study population<sup><a href="http://www.plosone.org/article/info:doi/10.1...
<p>Characteristics of the study population <a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>Characteristics of the Study Cohort<sup><a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>Background Characteristics<sup><a href="http://www.plosone.org/article/info:doi/10.1371/journal.p...
<p>Baseline characteristics <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.01...
<p>Characteristics of the study population <a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>Characteristics<sup><a href="http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.1...
<p>* All data are expressed as number (%)</p><p>Characteristics of the study populations<sup><a href...
<p>Characteristics of the study populations<a href="http://www.plosone.org/article/info:doi/10.1371/...
<p>See also [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0135545#pone.0135...
<p>Characteristics at enrollment<sup><a href="http://www.plosone.org/article/info:doi/10.1371/journa...
<p>Sample characteristics reported by parents (N = 779)<sup><a href="http://www.plosone.org/article/...
<p>Demographic Characteristics of the Participants<a href="http://www.plosone.org/article/info:doi/1...