function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aguiar, Aline & Morais, Drausio Honorio', 1],
    ['De Araujo Filho, João A. & Brito, Samuel V.', 1],
    ['Ferreira, Antonio Carlos Santos & Vieira, Fabiano Matos', 2],
    ['Garduno-Montes de Oca, Edgar Uriel & Mata-Lopez, Rosario', 2],
    ['Goldberg, Stephen R. & Bursey, Charles R. & Grismer, L. Lee', 1],
    ['Gupta, Neelima & Bhaskar, Manju & Gupta, Dileep Kumar', 2],
    ['Oca, Edgar Uriel Garduno-Montes de & Lopez-Caballero, Jorge D.', 3],
    ['Paredes-León, Ricardo & García-Prieto, Luis', 6],
    ['Rahimian, Hassan & Pazoki, Samaneh & Habashi, Sima Abbasi', 1],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    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);