function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Sibirica', 1],
    ['Backhuys', 2],
    ['Biodiversity Data Journal', 10],
    ['Caucasian Entomological Bulletin', 16],
    ['Entomo Helvetica', 6],
    ['Far Eastern Entomologist', 32],
    ['Journal of Insect Biodiversity', 1],
    ['Journal of Natural History', 9],
    ['Konowia', 1],
    ['Prévôt, Paris; Brive, Bourdeaux', 1],
    ['Schulz-Wundermann', 33],
    ['Vestnik Zoologii', 3],
    ['Zoosystematica Rossica', 2],
    ['Zootaxa', 117]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=234)',
    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);