function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albano, Paolo G. & Schnedl, Sara-Maria & Janssen, Ronald', 4],
    ['Castillo, Sara & Ramil, Fran', 1],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 1],
    ['Costa, Swami Leitão & Johanes, Isabella & Lohmann, Lúcia Garcez', 4],
    ['Gofas, Serge & Luque, Ángel A. & Oliver, Joan Daniel', 2],
    ['Kaim, Andrzej & Jenkins, Robert G. & Tanabe, Kazushige', 2],
    ['Nardo, Giovanni Domenico', 1],
    ['Negri, Mauro Pietro & Corselli, Cesare', 2],
    ['Okutani, Takashi & Kawamura, Reiko', 2],
    ['Pace, Marcelo R. & Marcati, Carmen R. & Lohmann, Lúcia G.', 1],
    ['Suarez-Mozo, Nancy Yolimar & Gracia, Adriana', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);