Journal article (2013) - MN Mons (author), MB Heringa (author), J van Genderen (author), LM Puijker (author), W Brand (author), CJ van Leeuwen (author), P Stoks (author), J.P. van der Hoek (author), D van der Kooij (author)

Journal article (2013) - K. Lekkerkerker (author), AH knol (author), JG Derks (author), MB Heringa (author), C. Houtman (author), CHM Hofman-Caris (author), EF Beerendonk (author), A Reus (author), J.Q.J.C. Verberk (author), J.C. van Dijk (author)