function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['DeMarmels, Jurg', 1],
    ['Dijkstra, Klaas-Douwe B. & Kalkman, Vincent J. & Dow, Rory A.', 8],
    ['Dijkstra, Klaas-Douwe B. & Kipping, Jens & Mézière, Nicolas', 1],
    ['Dow, Rory A. & Hämäläinen, Matti & Stokvis, Frank R.', 6],
    ['Ferro, Michael L. & Sites, Robert W. & Vitheepradit, Akekawat', 1],
    ['González-Soriano, Enrique', 7],
    ['Jocque, Merlijn & Argueta, Ivany', 2],
    ['Jocque, Merlijn & Garrison, Rosser', 1],
    ['Lieftinck, M. A.', 1],
    ['Phan, Quoc Toan & Sasamoto, Akihiko & Hayashi, Fumio', 2],
    ['de Sélys-Longchamps, Edmond', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);