function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 47],
    ['Ascomycete. org', 2],
    ['Biodiversity Data Journal', 10],
    ['Botanica Marina', 1],
    ['Cryptogamie, Mycologie', 2],
    ['Linzer biologische Beiträge', 31],
    ['Magazin für Insektenkunde', 1],
    ['MycoKeys', 53],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 2],
    ['Palaeontologia Electronica', 2],
    ['Phytochemistry', 1],
    ['Phytotaxa', 77],
    ['ZooKeys', 2],
    ['Zootaxa', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=244)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);