function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 4],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Annals of the Entomological Society of America', 2],
    ['Biodiversity Data Journal', 15],
    ['Dipteron', 1],
    ['Insects of Guam I', 8],
    ['Journal of Natural History', 1],
    ['Magazin fu ̈ r insektenkunde / herausgegeben von Karl Illiger', 1],
    ['Memoirs of the Entomological Society of Washington', 1],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 2],
    ['PhytoKeys', 1],
    ['Proceedings of the Hawaiian Entomological Society', 2],
    ['ZooKeys', 18],
    ['Zoological Systematics', 3],
    ['Zootaxa', 27],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=89)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);