function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anderson, Robert S.', 3],
    ['Anderson, Robert S. & Marvaldi, Adriana E.', 3],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Knížek, Miloš', 1],
    ['Kuschel, Guillermo', 5],
    ['Kuschel, Guillermo Dr.', 1],
    ['Legalov, A. A.', 2],
    ['Legalov, Andrei A.', 10],
    ['Oberprieler, Rolf G. & Marvaldi, Adriana E.', 1],
    ['Oberprieler, Rolf G. & Thompson, Richard T. & Peterson, Magnus', 3],
    ['Pullen, Kimberi R. & Jennings, Debbie & Oberprieler, Rolf G.', 1],
    ['Pérez-Hernández, Cisteil Xinum', 12],
    ['Soriano, Carmen', 2],
    ['Stiles, F. Gary & Remsen, J. V. & Mcguire, Jimmy A.', 1],
    ['Tang, William & Xu, Guang & Marler, Thomas', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);