function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 1],
    ['Backhuys', 7],
    ['Bibliopolii Academici Novi', 1],
    ['British Museum (Natural History)', 2],
    ['Carolum Reichard', 1],
    ['China Agricultural University Press', 2],
    ['Entomologist\'s gazette', 1],
    ['F. W. Forstmann', 32],
    ['Faunus (Gistel\'s)', 1],
    ['Journal of Natural History', 18],
    ['Linzer biologische Beiträge', 11],
    ['Memoirs of the Entomological Society of Southern Africa', 2],
    ['Regio typographeo scholarum', 5],
    ['ZooKeys', 9],
    ['Zootaxa', 54],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=152)',
    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);