function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 2],
    ['Biodiversity Data Journal', 15],
    ['Biodiversity journal', 9],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 3],
    ['Entomo Helvetica', 1],
    ['Insecta Mundi', 25],
    ['Insects of Guam I', 1],
    ['Papéis Avulsos de Zoologia', 131],
    ['Proceedings of the Hawaiian Entomological Society', 1],
    ['Revista Chilena de Entomología', 1],
    ['The Coleopterists Bulletin', 76],
    ['Vestnik Zoologii', 1],
    ['ZooKeys', 58],
    ['Zootaxa', 888]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1212)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);