function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 4],
    ['Asia Life Sciences', 2],
    ['Belgian Journal of Zoology', 4],
    ['Bollettino della Società Entomologica Italiana', 1],
    ['Indira Publishing House', 7],
    ['Journal of the Entomological Society of Southern Africa', 4],
    ['Pakistan Entomologist', 2],
    ['Pakistan Journal of Agricultural Sciences', 4],
    ['Persian Journal of Acarology', 1],
    ['Records of the Zoological Survey of India', 1],
    ['The Philippine Agriculturist', 2],
    ['University of Agriculture', 1],
    ['Zeitschrift für die Gesammten Naturwissenschaften', 1],
    ['ZooKeys', 3],
    ['Zootaxa', 35]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=72)',
    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);