function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Palaeontologica Polonica', 5],
    ['Acta Palaeontologica Romaniae', 15],
    ['Biodiversity Data Journal', 35],
    ['Cryptogamie, Algologie', 6],
    ['Geodiversitas', 15],
    ['Havniae & Lipsiae', 7],
    ['Journal of Natural History', 48],
    ['Laurentius Salvius', 12],
    ['Mémoires du Muséum national d\'Histoire naturelle', 4],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 29],
    ['Phytochemistry', 6],
    ['Phytotaxa', 32],
    ['ZooKeys', 4],
    ['Zoosystema', 21],
    ['Zootaxa', 45],
    ['Other (20)', 38]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=322)',
    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);