function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Mexicana-Nueva Serie', 2],
    ['Annales de la Société Entomologique de France, Nouvelle Série', 7],
    ['Annals of the Entomological Society of America', 6],
    ['Bibliopolii Academici Novi', 2],
    ['Japanese Journal of Systematic Entomology', 1],
    ['Journal of Natural History', 6],
    ['Neotropical Entomology', 1],
    ['Papéis Avulsos de Zoologia', 2],
    ['Revista Mexicana de Biodiversidad', 3],
    ['Zootaxa', 145]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=175)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);