Herrera, J. A.; Ersheng, G.; Shahabuddin, A.; Lixia, D.; Wei, Y.; Faisal, M.; Barua, P. C.; Akhtner, H. Periodical Assessment of the Prenatal Biopsychosocial Risk to Predict Obstetric and Perinatal Complications in Asian Countries 2002-2003. Colomb Med 2006, 37, 6-14.