function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 66],
    ['African invertebrates', 2],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 17],
    ['Archiv für Naturgeschichte', 8],
    ['Bollettino del Laboratorio di Zoologia Generale e Agraria della Reale Scoula superiore d\'Agricoltura, Portici', 1],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 9],
    ['Check List', 1],
    ['Edinburgh encyclopaedia, conducted by David Brewster', 1],
    ['European Journal of Taxonomy', 33],
    ['Myriapod Memoranda - A collection of papers and notes on systematics and geography of Diplopoda and Chilopoda', 2],
    ['Proceedings of the California Academy of Sciences, Series 4', 2],
    ['Revue suisse de Zoologie', 15],
    ['ZooKeys', 21],
    ['Zoosystema', 45],
    ['Zootaxa', 207],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=432)',
    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);