function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 2],
    ['A. F. Rose', 2],
    ['Abhandlungen K. Dansk. Vid. Selsk. Natur. Kjöbenh.', 2],
    ['Anales del Museo Nacional de Historia Natural de Montevideo, Serie 2', 1],
    ['Annales du Muséum d\'Histoire Naturelle, Paris', 3],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Anzeiger', 1],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 1],
    ['F. Schoell', 6],
    ['Giornale di Fisica, Chimica e Storia Naturale, Medicina ed Arti, Pavia, ed Arti Pavia', 5],
    ['Laurentius Salvius', 17],
    ['Sanderiano Commissum', 2],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 2],
    ['Tidsskrift for Naturvidenskaberne', 2],
    ['Zootaxa', 4],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=62)',
    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);