function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 1],
    ['Acta Entomologica Musei Nationalis Pragae', 23],
    ['Annals of the Entomological Society of America', 3],
    ['Bibliopolii Academici Novi', 2],
    ['Boston Journal of Natural History', 1],
    ['Catharsius La Revue', 1],
    ['European Journal of Entomology', 2],
    ['Insecta Mundi', 12],
    ['Japanese Journal of Systematic Entomology', 2],
    ['Mémoires du Muséum national d\'Histoire naturelle', 1],
    ['Proft et Storch', 12],
    ['ZooKeys', 5],
    ['Zoological Systematics', 7],
    ['Zoosystema', 2],
    ['Zootaxa', 23],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=99)',
    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);