function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bernard Séret & Peter R. Last', 6],
    ['Ebert, David A.', 3],
    ['Ebert, David A. & White, William T. & Ho, Hsuan-Ching', 1],
    ['Hardy, Graham S.', 1],
    ['Hsu, Hua Hsun & Joung, Shoou Jeng & Ebert, David A.', 1],
    ['Lima, Arthur De & Loboda, Thiago Silva & Gianeti, Michel Donato', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 1],
    ['Springer, S.', 2],
    ['Straube, Nicolas & White, William T. & Ho, Hsuan-Ching', 1],
    ['Séret, Bernard & Last, Peter R.', 4],
    ['White, William T. & Ko’Ou, Alfred', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    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);