function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archiv für Molluskenkunde', 1],
    ['Biodiversity Data Journal', 45],
    ['Boston Journal of Natural History', 2],
    ['Botanica Marina', 58],
    ['Check List', 48],
    ['Cryptogamie, Algologie', 42],
    ['European Journal of Taxonomy', 37],
    ['Iheringia, Série Botânica', 8],
    ['Nouveaux Mémoires de la Société Impériale des Naturalistes de Moscou', 2],
    ['PhytoKeys', 196],
    ['Phytochemistry', 2],
    ['Phytotaxa', 614],
    ['Plant Ecology and Evolution', 10],
    ['Report of the British Association for the Advancement of Science', 2],
    ['Zootaxa', 10],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1085)',
    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);