function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brandt, Angelika', 9],
    ['Liu, Wenliang & Sha, Zhongli', 3],
    ['Nickel, Judith M. & Brandt, Angelika', 2],
    ['Pereira, Emanuel & Roccatagliata, Daniel & Doti, Brenda L.', 2],
    ['Poore, G. C. B.', 12],
    ['Poore, Gary C. B.', 10],
    ['Stransky, Bente & Svavarsson, Jörundur & Poore, Gary C. B.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);