Gillies, Christopher E|Otto, Edgar A|Vega-Warner, Virginia|Robertson, Catherine C|Sanna-Cherchi, Simone|Gharavi, Ali|Crawford, Brendan|Bhimma, Rajendra|Winkler, Cheryl|Nephrotic Syndrome Study Network (NEPTUNE)|C-PROBE InvestigatorGroup of the Michigan Kidney Translational Core Center|Kang, Hyun Min|Sampson, Matthew G