The (w)hole survey: An unbiased sample study of transition disk candidates based on Spitzer catalogsN. van der Marel, B. W. Verhaar, S. van Terwisga, B. Merín, G. Herczeg, N. F. W. Ligterink and E. F. van DishoeckA&A, 592 (2016) A126DOI: https://doi.org/10.1051/0004-6361/201628075