function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bosser, Jean', 1],
    ['Bosser, Jean & Morat, Philippe', 1],
    ['Bytebier, Benny', 1],
    ['Chase, Mark W. & Schuiteman, André & Kumar, Pankaj', 35],
    ['Jarvis, Charlie', 2],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 2],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 2],
    ['Naive, Mark Arcebal K. & Hein, Khant Zaw & Kumar, Pankaj', 1],
    ['Ormerod, Paul & Kurzweil, Hubert & Watthana, Santi', 12],
    ['Vega, Hermes & Cetzal-Ix, William & Mó, Edgar', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);