function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anton Lamboj', 10],
    ['Anton Lamboj & Melanie L. J. Stiassny', 2],
    ['Lamboj, Anton & Schelly, Robert C.', 1],
    ['Roberts, Tyson R. & Stewart, D. J.', 2],
    ['STIASSNY, MELANIE L. J. & SCHLIEWEN, ULRICH K.', 1],
    ['Schliewen, Ulrich K. & Stiassny, Melanie L. J.', 1],
    ['Stewart, D. J. & Roberts, Tyson R.', 1],
    ['Ulrich K. Schliewen & Melanie L. J. Stiassny', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);