function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annandale, N.', 1],
    ['Barnard, Keppel Harcourt', 1],
    ['Broch, H.', 4],
    ['Buhl-Mortensen, L. & Newman, William A.', 1],
    ['Chan, Benny K. K.', 1],
    ['Chan, Benny K. K. & Tsang, Ling Ming & Shih, Fu-Lung', 2],
    ['Hiro, F.', 2],
    ['Hiro, Fujio', 1],
    ['Mifsud, Constantine', 2],
    ['Newman, William A.', 2],
    ['Nilsson-Cantell, C. a.', 2],
    ['Pilsbry, Henry A.', 2],
    ['Pitriana, Pipit & Jones, Diana S. & Corbari, Laure', 2],
    ['Utinomi, H.', 2],
    ['Young, Paulo S.', 4],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);