function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Castro, Peter', 1],
    ['Davie, Peter J. F. & Ng, Peter K. L.', 4],
    ['Gistel, Johannes von Nepomuk Franz Xaver', 1],
    ['Guerao, Guillermo & Anger, Klaus & Simoni, Riccardo', 1],
    ['Komai, Tomoyuki & Ng, Peter K. L.', 1],
    ['Naderloo, Reza', 1],
    ['Naderloo, Reza & Schubart, Christoph D.', 1],
    ['Naderloo, Reza & Türkay, Michael', 1],
    ['Naruse, Tohru & Ng, Peter K. L.', 1],
    ['Schubart, Christoph D. & Ng, Peter K. L.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);