function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 15],
    ['Biodiversity Data Journal', 54],
    ['Bollettino del Laboratorio di Zoologia Generale ed Agraria del R. Scuola d\'Agricultura di Portici', 4],
    ['Insects of Guam II', 1],
    ['Linzer biologische Beiträge', 70],
    ['Parte speciale', 1],
    ['Proc Linn Soc N S W', 1],
    ['Proceedings of the American Academy of Arts and Sciences', 1],
    ['Proceedings of the Entomological Society of Washington', 2],
    ['Proceedings of the Hawaiian Entomological Society', 5],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Spol Zeylan', 1],
    ['ZooKeys', 47],
    ['Zootaxa', 270]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=473)',
    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);