function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baudouin, Imprimeur du Corps législatif et de l\'Institut national, place du Carrousel, N °. 662, an 6', 1],
    ['Biodiversity Data Journal', 2],
    ['Helgoland Marine Research', 3],
    ['Iwanami Shoten', 1],
    ['Journal of Natural History', 10],
    ['Journal of molluscan studies', 1],
    ['Journal of the Ceylon Branch of the Royal Asiatic Society', 7],
    ['Kamchatpress', 1],
    ['New Zealand Journal of Zoology', 1],
    ['Papéis Avulsos de Zoologia', 3],
    ['Ruthenica, Russian Malacological Journal', 1],
    ['Transactions of the Zoological Society of London', 3],
    ['ZooKeys', 11],
    ['Zoological Journal of the Linnean Society', 18],
    ['Zootaxa', 42],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=106)',
    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);