function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales del Jardín Botánico de Madrid', 96],
    ['Biodiversity Data Journal', 43],
    ['Birkhaeuser Verlag', 39],
    ['Flora Helvetica', 26],
    ['Info Flora Schweiz', 43],
    ['Insecta Mundi', 52],
    ['Journal of the Adelaide Botanic Gardens', 20],
    ['Laurentius Salvius', 114],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 207],
    ['PhytoKeys', 1230],
    ['Phytochemistry', 21],
    ['Phytotaxa', 161],
    ['Revue suisse de Zoologie', 56],
    ['Systematic Botany', 52],
    ['Zootaxa', 38],
    ['Other (40)', 179]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2377)',
    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);