function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Strahan, and T. Cadell | W. Creech', 1],
    ['C. Sepp', 1],
    ['Gabriel Nicolaus Raspe', 3],
    ['Gebauer', 1],
    ['Laurentius Salvius', 38],
    ['Leigh, Sotheby & Son', 1],
    ['Nodder & Company', 1],
    ['Nova acta physico-medica Academiae Caesareae Leopoldino-Carolinae Naturae Curiosum', 1],
    ['S. Salvatori', 1],
    ['Utrecht', 3],
    ['Zoosystema', 27],
    ['Zoosystematics and Evolution', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=79)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);