function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Sinica', 1],
    ['Allan Hancock Pacific Expeditions', 1],
    ['Biologiya Morya (Vladivostok), Vladivostok', 1],
    ['Bulletin of the British Museum (Natural History), Zoology Series', 1],
    ['Centralblatt für Bakteriologie, Parasitenkunde und Infektionskrankheiten', 1],
    ['Japanese Journal of Zoology', 1],
    ['Keigaku Publishing Company', 1],
    ['Osnovy Trematodologii', 1],
    ['Parasitology', 1],
    ['Parazitologica', 1],
    ['Proceedings of the Helminthological Society of Washington', 1],
    ['Science Reports Tokyo Bunrika Daigaku (B)', 1],
    ['Transactions of the American Microscopical Society', 1],
    ['Uchenye Zapiski, Gor\'kovskii Gosudarstvennyi Universitet imeni N. I. Lobachevskogo', 1],
    ['Zoologischer Anzeiger', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=19)',
    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);