function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alessandri, G. De', 3],
    ['Barnard, Keppel Harcourt', 4],
    ['Broch, H.', 8],
    ['Carriol, René-Pierre', 2],
    ['Carriol, René-Pierre & Cahuzac, Bruno & Lesport, Jean-François', 2],
    ['Darwin, Charles Robert', 5],
    ['Hiro, F.', 10],
    ['Kim, Il-hoi & Kim, Hoon-Soo', 2],
    ['Kolbasov, Gregory A.', 8],
    ['Nilsson-Cantell, C. a.', 3],
    ['Pilsbry, Henry A.', 3],
    ['Rosell, Neon', 6],
    ['Utinomi, H.', 4],
    ['Yu, Meng-Chen & Chan, Benny K. K. & Achituv, Yair', 4],
    ['Yu, Meng-Chen & Kolbasov, Gregory A. & Hosie, Andrew M.', 5],
    ['Other (14)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=85)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);