function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hill, Robert V. & Mccartney, Jacob A. & Roberts, Eric', 3],
    ['Jouve, Stéphane & Iarochène, Mohamed & Bouya, Baâdi', 3],
    ['Jouve, Stéphane & Muizon, Christian De & Cespedes-Paz, Ricardo', 9],
    ['Sarr, Raphaël & Hill, Robert V. & Jenkins, Xavier A.', 1],
    ['Scavezzoni, Isaure & Fischer, Valentin & Johnson, Michela M.', 6],
    ['Zaher, Hussam & Pol, Diego & Carvalho, Alberto B.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);