function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales Zoologici', 2],
    ['Annales de la Societe Entomologique de Belgique', 7],
    ['Annales de la Société Entomologique de France', 4],
    ['Annals of Natural History; or, Magazine of Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany and Zoo', 1],
    ['Belgian Journal of Entomology', 33],
    ['Biodiversity Data Journal', 3],
    ['Bulletin et Annales de la Societe Entomologique de Belge', 4],
    ['Deutsche Entomologische Zeitschrift', 2],
    ['Japanese Journal of Systematic Entomology', 2],
    ['Journal of Hymenoptera Research', 26],
    ['Raffles Bulletin of Zoology', 12],
    ['Revue de Zoologie Africaine', 14],
    ['Voyage de Ch. Alluaud et R. Jeannel en Afrique Orientale (1911 - 1912). Résultats scientifiques. Hyménoptères', 5],
    ['ZooKeys', 30],
    ['Zootaxa', 91],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=239)',
    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);