function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cresson, E. T.', 1],
    ['Elberg, Kaupo & Rozkošný, Rudolf & Knutson, Lloyd', 10],
    ['Gbedjissi, Ghélus Louis & Vala, Jean-Claude', 1],
    ['Giglio-Tos, E.', 1],
    ['Khaghaninia, S. & Kazerani, F. & Vala, Jean-Claude', 2],
    ['Knutson, Lloyd V. & Deeming, John C. & Ebejer, Martin J.', 13],
    ['Li, Zhu & Yang, Ding', 10],
    ['Li, Zhu & Yang, Ding & Murphy, William L.', 1],
    ['Marinoni, Luciane & Murphy, William L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);