function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales de la Escuela Nacional de Ciencias Biológicas, México,', 1],
    ['Anales del Instituto de Biologia Universidad de Mexico', 1],
    ['Indian Journal of Helminthology', 1],
    ['Japanese Journal of Parasitology', 2],
    ['Japanese Journal of Zoology', 2],
    ['Journal of King Abdulaziz University Marine Sciences', 1],
    ['Journal of Parasitology', 6],
    ['Journal of Research of the Egyptian Medical Association', 2],
    ['Journal of the Arab Veterinary and Medical Association', 3],
    ['Norwegian Journal of Zoology', 2],
    ['Papers from the Tortugas Laboratory of the Carnegie Institute of Washington', 4],
    ['Research Bulletin of the Panjab University of Science (Zoology)', 2],
    ['Scientific Survey of Porto Rico and the Virgin Islands', 2],
    ['Studia Marina Sinica', 2],
    ['Zootaxa', 12],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=49)',
    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);