function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Atti della Accademia Pontaniana', 1],
    ['Benjamin White and Son', 2],
    ['Bolletino della Societa geologica italiana', 2],
    ['British Museum (Natural History)', 3],
    ['Bulletin -- United States National Museum', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, [Série 1]', 1],
    ['Don Antonio de Sancha', 1],
    ['Hallageriis', 1],
    ['Laurentius Salvius', 6],
    ['Memoirs of the Indian Museum', 1],
    ['Palaeontology', 1],
    ['Proceedings of the Zoological Society of London', 1],
    ['Skrivter af Naturhistorie-Selskabet', 2],
    ['ZooKeys', 3],
    ['Zoological Journal of the Linnean Society', 3],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=33)',
    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);