Examples of different types of pilot and feasibility study used in the on-line Delphi survey [10, 11, 12].

<p>Examples of different types of pilot and feasibility study used in the on-line Delphi survey [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0150205#pone.0150205.ref010" target="_blank">10</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0150205#pone.0150205.ref011" target="_blank">11</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0150205#pone.0150205.ref012" target="_blank">12</a>].</p>