function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 3],
    ['Bulletin of the American Museum of Natural History', 12],
    ['Check List', 13],
    ['Current Herpetology', 3],
    ['European Journal of Taxonomy', 4],
    ['Evolutionary Systematics', 3],
    ['Herpetozoa', 3],
    ['Journal of Natural History', 4],
    ['PLoS ONE', 9],
    ['Vertebrate Zoology', 30],
    ['ZooKeys', 31],
    ['Zoological Journal of the Linnean Society', 20],
    ['Zoosystema', 4],
    ['Zoosystematics and Evolution', 25],
    ['Zootaxa', 160],
    ['Other (16)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=344)',
    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);