function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 1],
    ['Journal Shanghai Sci. Inst., Section 3', 1],
    ['Mitteilungen aus dem Naturhistorischen Museum in Hamburg', 1],
    ['Nederlandsch Tijdschrift voor de Dierkunde', 1],
    ['Thèsis Facult. Sci. Univ. Paris, A', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=5)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);