function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 5],
    ['Acta Entomologica Musei Nationalis Pragae', 6],
    ['Archiv für Naturgeschichte, Abteilung A', 1],
    ['Baltic Journal of Coleopterology', 6],
    ['Biodiversity Data Journal', 13],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 1],
    ['Entomologist\'s monthly magazine', 6],
    ['European Journal of Taxonomy', 37],
    ['Insecta Mundi', 47],
    ['Insects of Guam I', 3],
    ['The Scientific Transactions of the Royal Dublin Society, Series 2', 3],
    ['ZooKeys', 31],
    ['Zoological Systematics', 2],
    ['Zoological studies', 10],
    ['Zootaxa', 17],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=193)',
    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);