The files in the supplement contain the WinBUGS codes for the models used in the paper. Files hhspecies1.txt, hhspecies2.txt, and hhspecies3.txt are for the first model; hhM2.txt is for the second model; hhM3.txt is for the third model; hhM4.txt is for the fourth model; and hhM5.txt is for the fifth model.