function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bezzi, Mario', 1],
    ['Rognes, Knut', 4],
    ['Senior-White, Ronald A.', 2],
    ['Surcouf, J. M. R.', 2],
    ['Séguy, Eugène', 2],
    ['Villeneuve de Janti, J.', 1],
    ['Yang, Shih-Tsai & Kurahashi, Hiromu & Shiao, Shiuh-Feng', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);