Does attrition bias longitudinal population-based studies on back pain?
by Schmidt, Carsten (Author)
, Raspe, Heiner (Author)
, Pfingsten, Michael (Author)
, Hasenbring, Monika (Author)
, Basler, Heinz Dieter (Author)
, Eich, Wolfgang (Author)
, Kohlmann, Thomas (Author)
,
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