function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 12],
    ['Biodiversity Data Journal', 3],
    ['Carolum Reichard', 2],
    ['Dipteron', 7],
    ['Eberhard Klett et Franck', 6],
    ['European Journal of Taxonomy', 32],
    ['Far Eastern Entomologist', 3],
    ['Insecta Mundi', 9],
    ['Ioannis Thomae Trattner', 3],
    ['Laurentii Salvii', 5],
    ['Laurentius Salvius', 38],
    ['Tijdschrift voor Entomologie', 3],
    ['ZooKeys', 44],
    ['Zoological Systematics', 21],
    ['Zootaxa', 100],
    ['Other (12)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=302)',
    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);