function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arquivos do Museu Nacional Rio de Janeiro', 1],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College', 1],
    ['Bulletin of the Vanderbilt Oceanographic Museum', 1],
    ['Comunicaciones Zoologicas del Museo de Historia Natural de Montevideo', 1],
    ['Journal and Proceedings of the Asiatic Society of Bengal', 1],
    ['Notulae Naturae', 1],
    ['Papers from the Tortugas Laboratory of the Carnegie Institute of Washington', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 1],
    ['Proceedings of the Boston Society of Natural History', 1],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Publications of the Field Museum of Natural History, Zoölogical', 1],
    ['Serv. Pesq. Peru', 1],
    ['Special Bulletin of the United States National Museum', 1],
    ['Texas Journal of Science', 1],
    ['Zootaxa', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);