function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 4],
    ['Biodiversity Data Journal', 36],
    ['Botanica Marina', 20],
    ['Check List', 9],
    ['Cryptogamie, Mycologie', 23],
    ['Geodiversitas', 5],
    ['Journal of Threatened Taxa', 21],
    ['MycoKeys', 697],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 4],
    ['Persoonia', 10],
    ['Phytochemistry', 6],
    ['Phytotaxa', 544],
    ['Zoological Journal of the Linnean Society', 8],
    ['Zoosystema', 53],
    ['Zootaxa', 45],
    ['Other (17)', 24]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1509)',
    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);