function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 1],
    ['Discovery Reports', 2],
    ['Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten', 2],
    ['Longman, Brown', 3],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 2],
    ['Notas Prel. Mus. La Plata Buenos Aires', 1],
    ['Rep. " Southern Cross, " Brit. Mus. (Nat. Hist.).', 2],
    ['Report on the Scientific Results of the Voyage of H. M. S. “ Challenger ” during the Years 1873 - 76 under the Command of Captai', 3],
    ['Revista Chilena de Historia Natural', 1],
    ['Sci. Res. Norweg. Ant. Exped. 1927 - 1928. Oslo', 1],
    ['Transactions of the Royal Society of Edinburgh', 2],
    ['Voprosy Ikhtiologii', 2],
    ['Wiss. Ergebn. Schwed. Südpolar-Exp.', 3],
    ['Zoodiversity', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=30)',
    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);