function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bhutta, M. S. & Khan, D.', 1],
    ['Carus, Carl Gustav', 1],
    ['Cremonte, Florencia & Drago, Fabiana B.', 1],
    ['Fischthal, Jacob H. & Kuntz, Robert E', 1],
    ['Muniz-Pereira, Luís C. & Vieira, Fabiano M. & Luque, José L.', 1],
    ['Pinto, Hudson Alves & Melo, Alan Lane De', 1],
    ['Travassos, L.', 1],
    ['Tubangui, Marcos A.', 1],
    ['Yamaguti, S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    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);