function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 25],
    ['Alpine Entomology', 24],
    ['Anales de la Sociedad Cientifica Argentina', 1],
    ['Archiv für Naturgeschichte, Abteilung A', 1],
    ['Biodiversity Data Journal', 5],
    ['Entomo Helvetica', 6],
    ['Journal of the Royal Society of New Zealand', 11],
    ['Proceedings of the Hawaiian Entomological Society', 1],
    ['Species Diversity', 3],
    ['ZooKeys', 17],
    ['Zootaxa', 211]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=305)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);