function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Biodiversity Data Journal', 8],
    ['Bronner', 1],
    ['Bulletin of the United States Bureau of Fisheries', 1],
    ['E. J. Brill', 2],
    ['Kosugi Co., Ltd.', 1],
    ['Memoirs of the Carnegie Museum', 1],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 1],
    ['Proc. K. Ned. Akad. Wet., C, Zool.', 2],
    ['Proceedings of the Linnean Society of New South Wales', 1],
    ['Voorst', 1],
    ['ZooKeys', 1],
    ['Zootaxa', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);