function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de Parasitologie Humaine et Comparée', 2],
    ['Annales de la Société Belge de Medecine Tropicale', 1],
    ['Annotationes Zoologicae Japonenses', 1],
    ['Annual Report of the Director of Veterinary Services, Deparment of Agriculture. Union of South Africa', 1],
    ['Chinese Medical Journal', 1],
    ['Helminthologia', 1],
    ['Indian Journal of Medical Research', 1],
    ['Indian Journal of Veterinary Science', 2],
    ['Indian Veterinary Journal', 1],
    ['Journal of Parasitology', 2],
    ['Journal of Tropical Medicine and Hygiene', 1],
    ['Journal of Tropical Veterinary Science', 3],
    ['Parasitology', 3],
    ['Presses Universitaires de Perpignan', 1],
    ['Transactions of the Royal Society of Tropical Medicine and Hygiene', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=25)',
    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);