function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 1],
    ['African Invertebrates', 1],
    ['Baudouin, Imprimeur du Corps législatif et de l\'Institut national, place du Carrousel, N °. 662, an 6', 1],
    ['Biodiversity Data Journal', 1],
    ['Check List', 2],
    ['Cryptogamie, Mycologie', 10],
    ['Denkschriften der Schweizerischen Naturforschenden Gesellschaft', 1],
    ['Deterville', 1],
    ['Geodiversitas', 6],
    ['Insecta Mundi', 2],
    ['MycoKeys', 20],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 2],
    ['Phytotaxa', 42],
    ['Zoosystematics and Evolution', 4],
    ['Zootaxa', 7],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=103)',
    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);