PLoS ONE, doi:10.1371/journal.pone.0112562, published 12 November 2014.
The German Academic Exchange Service granted a short time stipend for graduate students to CASM, D/10/520, which covered the travelling expenses for the data collection in Peru from September 12th to December 8th in 2011. The Landesgraduiertenforderung BadenWurttemberg is funding the graduate study of CASM, funding number 1104, 2012-2014. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
The authors have declared that no competing interests exist.