function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Damaška, Albert F. & Aston, Paul', 3],
    ['Damaška, Albert František & Konstantinov, Alexander', 1],
    ['Konstantinov, Alexander S. & Duckett, Catherine N.', 6],
    ['Otani, Sean & Bertoli, Luca & Lucchini, Filippo', 1],
    ['Schilthuizen, Menno & Berenyi, Alfie E. A. & Limin, Army', 1],
    ['Schilthuizen, Menno & Seip, Lilian A & Otani, Sean', 4],
    ['Suenaga, Haruki', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);