[1] Univ Catolica Portuguesa, Inst Hlth Sci, Ctr Interdisciplinary Res Hlth, Lisbon, Portugal
[2] Univ Catolica Portuguesa, Inst Hlth Sci, Ctr Interdisciplinary Res Hlth, Oporto, Portugal
[3] Preto Univ Sao Paulo, Ribeirao Preto Coll Nursing, Nursing Sch Ribeirao, Sao Paulo, Brazil
[4] Boston Coll, William F Connell Sch Nursing, Chestnut Hill, MA 02167 USA