function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Damaška, Albert F. & Aston, Paul', 1],
    ['Damaška, Albert František & Konstantinov, Alexander', 1],
    ['Damaška, Albert František & Ruan, Yongying & Fikáček, Martin', 1],
    ['Duckett, Catherine N. & Prathapan, K. D.', 2],
    ['Jacoby, Martin', 1],
    ['Nadein, Konstantin S.', 71]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=77)',
    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);