Supplementary material, Raw data and R code used for the analyses and
preparation of figures presented in:
Lefort, M.C., Cruickshank, R.H., Descovich, K., Adams, N.J., Barun, A., Emami-Khoyi, A., Ridden, J., Smith, V.R., Sprague, R., Waterhouse, B. and Boyer, S., 2018. Blood, sweat and tears: a review of non-invasive DNA sampling. bioRxiv, p.385120.