function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aquarien und Terrarien Zeitschrift', 5],
    ['Biodiversity Data Journal', 14],
    ['Blättet für Aqüarien und Terrarienfunde', 9],
    ['Comunicaciones Zoologicas del Museo de Historia Natural de Montevideo', 5],
    ['Comunicaciones zoologicas del Museo de Historia Natural de Montevideo', 6],
    ['Ichthyol Explor. Freshwaters', 6],
    ['Ichthyological Exploration of Freshwaters', 33],
    ['Neotropical Ichthyology', 23],
    ['Revista Brasileira de Biologia', 6],
    ['Revista Brasileira de Zoologia', 6],
    ['Revue française d\'Aquariologie Herpétologie', 12],
    ['Vertebrate Zoology', 7],
    ['Zoological Journal of the Linnean Society', 28],
    ['Zoosystematics and Evolution', 10],
    ['Zootaxa', 289],
    ['Other (46)', 79]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=538)',
    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);