. 2019 Feb 13;10:55. doi: 10.3389/fpsyt.2019.00055
Copyright © 2019 Steardo, Caivano, Sampogna, Di Cerbo, Fico, Zinno, Del Vecchio, Giallonardo, Torella, Luciano and Fiorillo.
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Figure 1.
Multi-step recruitment procedure.