function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aspe, Nonillon M. & James, Samuel W.', 2],
    ['Cobb, Nathan Augustus', 1],
    ['Geraert, E & Mráček, Zdeněk & Sudhaus, Walter', 1],
    ['Herrmann, Matthias & Mayer, Werner E. & Sommer, Ralf J.', 6],
    ['Kanzaki, Natsumi & Herrmann, Matthias & Weiler, Christian', 9],
    ['Kanzaki, Natsumi & Ragsdale, Erik J. & Herrmann, Matthias', 18],
    ['Ragsdale, Erik J. & Kanzaki, Natsumi & Röseler, Waltraud', 8],
    ['Sommer, Ralf J. & Carmi, I & Eizinger, A & Grandien, K', 1],
    ['Sommer, Ralf J. & Carta, Lk & Kim, S-y & Sternberg, Pw', 1],
    ['Steiner, Gotthold', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);