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5. AcknowledgementsAuthors wish to thank the Hungarostudy Health Panel team: Éva Susánszky, András Székely, András Klinger, and Andrea Ódor. This study was supported by the National Research Fund (OTKA) projects OTKA TS–40889 (2002) and TS–049785 (2004) Scientific School grants and the National Office for Research and Technology (grants: NKFP 1/002/2001 and NKFP 1b/020/2004). The first author is supported by the János Bolyai Research Fellowship of the Hungarian Academy of Sciences. |