function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 107],
    ['Acarological Studies', 2],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 2],
    ['Annals of the Entomological Society of America', 1],
    ['Australian Journal of Zoology, Supplementary Series', 1],
    ['Can Ent', 2],
    ['Can Ent Suppl', 1],
    ['Florida entomologist', 1],
    ['Journal of Natural History', 15],
    ['Persian Journal of Acarology', 8],
    ['Soil Organisms', 3],
    ['Species Diversity', 2],
    ['ZooKeys', 1],
    ['Zoological Science', 1],
    ['Zootaxa', 271]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=418)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);