function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Göcke, Christian & Janussen, Dorte', 3],
    ['Kelly, Michelle & Rowden, Ashley A.', 2],
    ['Kim, Young A & Sim, Chung Ja', 2],
    ['Morozov, Grigori & Sabirov, Rushan & Zimina, Olga', 2],
    ['Turner, Thomas L. & Rouse, Greg W. & Weigel, Brooke L.', 1],
    ['Van Soest, Rob W. M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);