function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amphibian & Reptile Conservation', 1],
    ['Annals of the Carnegie Museum', 4],
    ['Archiv für Molluskenkunde', 1],
    ['Baltic Journal of Coleopterology', 1],
    ['Bulletin de la Société Entomologique de France', 1],
    ['Caucasian Entomological Bulletin', 1],
    ['Comptes Rendus Biologies', 1],
    ['Copeia', 1],
    ['Crustaceana', 1],
    ['Daya Publishing house', 1],
    ['Entomologist\'s monthly magazine', 2],
    ['Méquignon-Marvis', 3],
    ['Reports of Science Research Voyage of H. M. S. Challenger. Zoology', 2],
    ['Zoologischer Anzeiger', 2],
    ['Zootaxa', 3],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=41)',
    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);