“…Five of these studies presented longitudinal survey data (Grimmer, Nyland, & Milanese, 2006; Laaksonen et al., 2010; Larsson & Sund, 2005; Palacio-Vieira et al., 2008; Sweeting & West, 2003), 26 (repeat) cross-sectional survey data (Bigal et al., 2007; Bisegger et al., 2005; Cavallo et al., 2006; Gadin & Hammarstrom, 2000; Gordon et al., 2004; Haugland et al., 2001; Heinrich, Morris, & Kroner-Herwig, 2009; Holmberg & Hellberg, 2007; Jorngarden, Wettergen, & von Essen, 2006; Kujala, Taimela, & Viljanen, 1999; Laurell, Larsson, & Eeg-Olofsson, 2004; Leonardsson-Hellgren, Gustavsson, & Lindblad, 2001; Lundqvist, Clench-Aas, Hofoss, & Bartonova, 2006; Mavromichalis, Anagnostopoulos, Metaxas, & Papanastassiou, 1999; Meland et al., 2007; Mortimer, Kay, & Jaron, 1992, 1993; Ostberg, Alfven, & Hjern, 2006; Petersen, Bergstrom, & Brulin, 2003; Ravens-Sieberer, Erhart, Wille, Bullinger, & Bella Study Group, 2008; Rhee et al., 2005; Santinello et al., 2009; Sleskova, Salonna, Madarasova Geckova, van Dijk, & Groothoff, 2005; Sundblad, Saartok, & Engstrom, 2007; Torsheim et al., 2006; Wedderkopp, Leboeuf-Yde, Andersen, Froberg, & Hansen, 2001), and 10 routinely collected data (Beilmann et al., 1999; Carle et al., 2004; Casu, Pascutto, Bernardinelli, Sardinian IDDM Epidemiology Study Group, & Songini, 2004; Christensen et al., 2007; Cinek et al., 2000; Cotellessa et al., 2003; Freitag, May, Pfafflin, Konig, & Rating, 2001; Karvonen et al., 1999; Michalkova, Cernay, Dankova, Rusnak, & Fandakova, 1995; Skordis et al., 2002), such as clinic/hospital statistics.…”