function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 1],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 1],
    ['Cunha, Carlo M.', 1],
    ['Cunha, Carlo M. & Salvador, Rodrigo B.', 18],
    ['Helwerda, Renate A.', 5],
    ['Luca, Javier Di & Zelaya, Diego G.', 2],
    ['Maxwell, Phillip A.', 1],
    ['Poppe, Guido & Tagaro, Sheila & Goto, Yoshihiro', 1],
    ['Rosenfeld, Sebastian & Aldea, Cristian & Mansilla, Andres', 1],
    ['Sacchetti, Claudia & Landau, Bernard & Ávila, Sérgio P.', 2],
    ['Thivaiou, Danae & Harzhauser, Mathias & Koskeridou, Efterpi', 1],
    ['Valdés, Ángel', 33]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);