00507nas a2200157   4500000000100000008004100001260002100042100001300063700001600076700001700092700001400109700001200123700001300135700002100148245018000169       2013                            d  aFortaleza Brazil1 aFilho R.1 aFerreira P.1 aJunqueira D.1 aHopper J.1 aLima T.1 aMaher C.1 aFerreira Manuela00aPresenting a new methodology to investigate the influence of heritability and risk factors for low back pain: a twin-controlled study [Award for outstanding research abstract]