function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Scientarium Naturalium Universitatis Nan Kaiensis', 1],
    ['Acta Zootaxonomica Sinica', 1],
    ['Comptes rendus des séances de l’Académie des Sciences', 1],
    ['Japanese Journal of Zoology', 4],
    ['Journal of Parasitology', 2],
    ['Journal of helminthology', 1],
    ['Keigaku Publishing Company', 1],
    ['Rivista di Parassitologia', 1],
    ['Résultats des Campagnes Scientifiques du Albert Ier, Prince Monaco', 1],
    ['Uchenye Zapiski Gorkovskii Gosudarstv. Pedogog .. Inst. im. M. Gorkogo, Ser. Biol. Nauk', 1],
    ['Zoologicheskii Zhurnal', 1],
    ['Zoologische Jahrbuecher Abteilungen für Systematik', 1],
    ['l\'Institute de France (Academie des sciences)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);