function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African invertebrates', 10],
    ['Archiv für Molluskenkunde', 3],
    ['Basteria', 8],
    ['Beaufortia', 3],
    ['Johan. Christi. Trappii', 3],
    ['La Conchiglia', 8],
    ['Laurentius Salvius', 3],
    ['Molluscan Research', 14],
    ['Mémoires du Muséum National d’Histoire Naturelle', 19],
    ['Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 – 76, Zoology', 10],
    ['Sarsia', 3],
    ['Venus', 3],
    ['Zoologische Verhandelingen, Leiden', 7],
    ['Zoosystema', 78],
    ['Zootaxa', 20],
    ['Other (11)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=206)',
    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);