[1] Univ Europea Madrid, Fac Biomed, Psychol Dept, Madrid 28670, Spain
[2] Univ Europea Madrid, Fac Biomed, Nursing Dept, Madrid 28670, Spain
[3] Univ Autonoma Madrid, Fac Med, Obstet & Gynecol Dept, Madrid 28049, Spain
[4] Hosp Univ Fdn Jimenez Diaz, Dept Obstet & Gynecol, Madrid 28040, Spain
[5] Univ Complutense Madrid, Fac Nursing Physiotherapy & Podiatry, Nursing Dept, Madrid 28040, Spain