function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allain, Ronan & Vullo, Romain & Rozada, Lee & Anquetin, Jérémy', 1],
    ['Benson, Roger B. J.', 5],
    ['Fernández, Omar Rafael Regalado & Stöhr, Henrik', 2],
    ['Hendrickx, Christophe & Mateus, Octávio', 2],
    ['John S. McIntosh', 2],
    ['Leidy, J.', 2],
    ['Matthew, W. D., & Brown, B.', 1],
    ['Monvoisin, Evariste & Allain, Ronan & Buffetaut, Eric', 3],
    ['Rauhut, Oliver W. M.', 4],
    ['Rauhut, Oliver W. M. & Milner, Angela C. & Moore-Fay, Scott', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);