function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araújo, Diogo & Alves, Marccus', 1],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 1],
    ['Couto, Ricardo Sousa & Cornejo, Xavier', 1],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 2],
    ['Hatusima, Sumihiko', 1],
    ['Jarvis, Charlie', 10],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 6],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 1],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 1],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 4],
    ['Prain, David & Burkill, Isaac Henry', 1],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 2],
    ['Wilkin, Paul & Hladik, Annette & Jeannoda, Vololoniaina', 2],
    ['Wilkin, Paul & Hladik, Annette & Labat, Jean-Noël', 2],
    ['Wilkin, Paul & Muasya, A. Muthama', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);