function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 1],
    ['Bakker, Piet A. J. & Albano, Paolo G.', 1],
    ['Darragh, Thomas A.', 6],
    ['De, Silvio Felipe B. & De, José Carlos N.', 2],
    ['Hansen, Thomas', 11],
    ['Høisæter, Tore', 1],
    ['Luca, Javier Di & Zelaya, Diego G.', 2],
    ['Pacaud, Jean-Michel', 1],
    ['Romani, Luigi & Rolán, Emilio & Mifsud, Constantine', 1],
    ['Rosenfeld, Sebastian & Aldea, Cristian & Mansilla, Andres', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    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);