function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Austral Entomology', 1],
    ['Australian journal of entomology', 1],
    ['Biodiversity Data Journal', 11],
    ['Insect systematics & evolution', 2],
    ['Journal of Natural History', 1],
    ['Linzer biologische Beiträge', 1],
    ['Medd Soc Fauna Flora Fenn', 1],
    ['Mem. Estud Mus Zool Univ Coimbra', 1],
    ['Memoires de la Société (Royale) des Sciences, de l\'Agriculture et des Arts à Lille', 1],
    ['Proceedings of the Hawaiian Entomological Society', 2],
    ['Revue suisse de Zoologie', 6],
    ['Subterranean Biology', 8],
    ['ZooKeys', 14],
    ['Zoosystema', 103],
    ['Zootaxa', 345],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=504)',
    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);