function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 3],
    ['Anales de Instituto de Biología, Universidad Nacional Autónoma de México, Serie Zoologia', 2],
    ['Asia Life Sciences', 3],
    ['Entomotaxonomia', 1],
    ['Indira Publishing House', 3],
    ['Phytophylactica', 2],
    ['Records of the Zoological Survey of India', 1],
    ['Redia', 1],
    ['Sarhad Journal of Agriculture', 3],
    ['The Philippine Agriculturist', 3],
    ['ZooKeys', 2],
    ['Zootaxa', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);