function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals of the Carnegie Museum', 1],
    ['Avances en Ciencias e Ingenierías', 12],
    ['Biota Colombiana', 1],
    ['Check List', 21],
    ['European Journal of Taxonomy', 4],
    ['Evolutionary Systematics', 3],
    ['Herpetologica', 3],
    ['Papéis Avulsos de Zoologia', 6],
    ['Public Library of Science, ONE', 4],
    ['Vertebrate Zoology', 3],
    ['ZooKeys', 55],
    ['Zoological Journal of the Linnean Society', 10],
    ['Zoosystema', 8],
    ['Zoosystematics and Evolution', 2],
    ['Zootaxa', 61],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=196)',
    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);