function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asahina, Syoziro', 2],
    ['Bazzi, Gaia & Galimberti, Andrea & Foglini, Claudio', 5],
    ['Carvalho, Alcimar L. & Salgado, Luiz Gustavo V.', 2],
    ['Dijkstra, Klaas-Douwe B.', 7],
    ['Dijkstra, Klaas-Douwe B. & Samways, Michael J.', 6],
    ['Fleck, Günther & Juillerat, Laurent', 2],
    ['Grand, Daniel & Marinov, Milen & Jourdan, Herve & Cook, Carl', 4],
    ['Legrand, Jean', 11],
    ['Lieftinck, M. A.', 7],
    ['Mauffray, William F. & Tennessen, Kenneth J.', 5],
    ['Syoziro Asahina', 5],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 4],
    ['Zhang, Haomiao & Tong, Xiaoli', 3],
    ['de Sélys-Longchamps, Michel-Edmond baron', 4],
    ['van Tol, Jan', 4],
    ['Other (24)', 26]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=97)',
    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);