function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archiv für Molluskenkunde', 186],
    ['Biodiversity Data Journal', 9],
    ['Biodiversity journal', 1],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou, Novelle Série', 1],
    ['Bulletin of Malacology, Taiwan', 1],
    ['Caucasiana', 34],
    ['Conchylia', 1],
    ['Ecologica Montenegrina', 14],
    ['European Journal of Taxonomy', 9],
    ['Linzer biologische Beiträge', 8],
    ['Ruthenica, Russian Malacological Journal', 4],
    ['Visaya', 16],
    ['ZooKeys', 234],
    ['Zoological Journal of the Linnean Society', 2],
    ['Zootaxa', 9],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=536)',
    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);