function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Butler, Arthur Gardiner', 13],
    ['Doleschall, Carl Ludwig', 1],
    ['Girard, Charles Frédéric', 1],
    ['Haupt, Joachim', 2],
    ['Kraepelin, Karl', 10],
    ['Kušta, Jan', 1],
    ['Lucas, Hippolyte', 5],
    ['Oates, E. W.', 8],
    ['Pocock, Reginald Innes', 6],
    ['Rowland, J. Mark', 1],
    ['Speijer, E. A. M.', 6],
    ['Stoliczka, Ferdinand', 4],
    ['Tarnani, J.', 7],
    ['Thorell, Tord Tamerlan Teodor', 3],
    ['Werner, F.', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=70)',
    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);