function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beneš, Karel', 4],
    ['Grearson, K. John & Liston, Andrew D.', 3],
    ['Liston, A. D. & Knight, G. T. & Heibo, E. & Bland, K. P.', 6],
    ['Liston, Andrew & Prous, Marko & Macek, Jan', 7],
    ['Liston, Andrew D.', 6],
    ['Liston, Andrew D. & Jacobs, Hans-Joachim & Prous, Marko', 6],
    ['Liston, Andrew D. & Knight, Guy T. & Sheppard, David A.', 108],
    ['Macek, Jan', 5],
    ['Prous, Marko & Kramp, Katja & Liston 1, Veli VikbergAndrew', 89],
    ['Prous, Marko & Liston, Andrew & Kramp, Katja & Savina, Henri', 3],
    ['Prous, Marko & Vikberg, Veli & Liston, Andrew & Kramp, Katja', 17],
    ['Schedl, W.', 30],
    ['Schedl, Wolfgang', 10],
    ['Smith, David R.', 8],
    ['Taeger, Andreas & París, Mercedes & Nieves-Aldrey, Jose Luis', 2],
    ['Other (10)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=314)',
    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);