function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 4],
    ['Annalen des Naturhistorischen Museums in Wien', 1],
    ['Annales de la Societe Entomologique de Belgique', 5],
    ['Annali del Museo Civico di Storia Naturale Giacomo Doria (Genova)', 1],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Biodiversity Data Journal', 10],
    ['British Museum', 5],
    ['Bulletin of the American Museum of Natural History', 4],
    ['Far Eastern Entomologist', 4],
    ['Revue de Zoologie Africaine', 2],
    ['Revue de Zoologie et de Botanique Africaines', 3],
    ['Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien', 2],
    ['Voyage de Ch. Alluaud et R. Jeannel en Afrique Orientale (1911 - 1912). Résultats scientifiques. Hyménoptères', 2],
    ['ZooKeys', 40],
    ['Zootaxa', 5],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=93)',
    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);