BMC Public Health 2008, 8:171 http://www.biomedcentral.com/1471-2458/8/171 22. Will B, Zeeb H, Baune BT: Overweight and obesity at school entry among migrant and German children: a cross-sec- tional study. BMC Public Health 2005, 5(1):45. 23. Cole TJ, Bellizzi MC, Flegal KM, Dietz WH: Establishing a standard definition for child overweight and obesity worldwide: inter- national survey. BMJ 2000, 320(7244):1240-1243. 24. Jebb SA, Prentice AM: Single definition of overweight and obes- ity should be used. BMJ 2001, 323(7319):999. 25. Apfelbacher CJ, Cairns J, Bruckner T, Mohrenschlager M, Behrendt H, Ring J, Kramer U: Prevalence of overweight and obesity in East and West German children in the decade after reunification: population-based series of cross-sectional studies. J Epidemiol Community Health 2008, 62(2):125-130. 26. Krämer U, Behrendt H, Dolgner R, Ranft U, Ring J, Willer H, Schlip- koter HW: Airway diseases and allergies in East and West German children during the first 5 years after reunification: time trends and the impact of sulphur dioxide and total sus- pended particles. Int J Epidemiol 1999, 28(5):865-873. 27. du Prel X, Kramer U, Ranft U: Changes in social inequality with respect to health-related living conditions of 6-year-old chil- dren in East Germany after re-unification. BMC Public Health 2005, 5(1):64. 28. Krämer U, Lemmen CH, Behrendt H, Link E, Schafer T, Gostomzyk J, Scherer G, Ring J: The effect of environmental tobacco smoke on eczema and allergic sensitization in children. Br J Dermatol 2004, 150(1):111-118. 29. Hosmer DW, Lemeshow S: Applied Logistic Regression. 2nd edition. New York, John Wiley & Sons, Inc. . 2000 30. Power C, Manor O, Matthews S: Child to adult socioeconomic conditions and obesity in a national cohort. Int J Obes Relat Metab Disord 2003, 27(9):1081-1086. 31. Livingstone B: Epidemiology of childhood obesity in Europe. Eur J Pediatr 2000, 159 Suppl 1:S14-34. 32. Parsons TJ, Power C, Logan S, Summerbell CD: Childhood predic- tors of adult obesity: a systematic review. Int J Obes Relat Metab Disord 1999, 23 Suppl 8:S1-107. 33. Reilly JJ, Armstrong J, Dorosty AR, Emmett PM, Ness A, Rogers I, Steer C, Sherriff A: Early life risk factors for obesity in child- hood: cohort study. BMJ 2005, 330(7504):1357. 34. Ferreira RJ, Marques-Vidal PM: Prevalence and determinants of obesity in children in public schools of sintra, portugal. Obes- ity (Silver Spring) 2008, 16(2):497-500. 35. Danielzik S, Czerwinski-Mast M, Langnase K, Dilba B, Muller MJ: Parental overweight, socioeconomic status and high birth weight are the major determinants of overweight and obes- ity in 5-7 y-old children: baseline data of the Kiel Obesity Pre- vention Study (KOPS). Int J Obes Relat Metab Disord 2004, 28(11):1494-1502. 36. Fuentes RM, Notkola IL, Shemeikka S, Tuomilehto J, Nissinen A: Tracking of body mass index during childhood: a 15-year pro- spective population-based family study in eastern Finland. Int J Obes Relat Metab Disord 2003, 27(6):716-721. 37. Owen CG, Martin RM, Whincup PH, Smith GD, Cook DG: Effect of infant feeding on the risk of obesity across the life course: a quantitative review of published evidence. Pediatrics 2005, 115(5):1367-1377. 38. Toschke AM, Montgomery SM, Pfeiffer U, von Kries R: Early intra- uterine exposure to tobacco-inhaled products and obesity. Am J Epidemiol 2003, 158(11):1068-1074. Pre-publication history The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1471-2458/8/171/pre pub Publish with Bio Med Central and every scientist can read your work free of charge "BioMed Central will be the most significant development for disseminating the results of biomedical research in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical community peer reviewed and published immediately upon acceptance cited in PubMed and archived on PubMed Central yours — you keep the copyright Submit your manuscript here: http://www.biomedcentral.com/info/publishing_adv.asp BioMedcentral Page 10 of 10 (page number not for citation purposes)