[1] Univ Antwerp, Fac Med & Hlth Sci, B-2020 Antwerp, Belgium
[2] Karel de Grote Univ Coll, Antwerp, Belgium
[3] Dutch Cochrane Ctr, Belgian Branch, Ctr Evidence Based Med CEBAM, Louvain, Belgium
[4] Univ Adelaide, Fac Hlth Sci, Cochrane Nursing Care Field, Adelaide, SA, Australia
[5] Catholic Univ Louvain, Inst Res Hlth & Soc, Nursing Res PRISCI, B-1348 Louvain, Belgium