function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aqua, Journal of Ichthyology and Aquatic Biology', 25],
    ['Biodiversity Data Journal', 29],
    ['Copeia', 24],
    ['European Journal of Taxonomy', 43],
    ['Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology', 27],
    ['Journal of Natural History', 38],
    ['Journal of the Ocean Science Foundation', 44],
    ['Monogr. Bur. Sci. Manila', 19],
    ['Philippine Journal of Science, Section D', 25],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 34],
    ['Proceedings of the Biological Society of Washington', 27],
    ['Proceedings of the United States National Museum, 3', 49],
    ['Raffles Bulletin of Zoology', 53],
    ['Turkish Journal of Zoology', 30],
    ['Zootaxa', 838],
    ['Other (213)', 713]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2018)',
    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);