function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeda, Frank & Pacifico, Ricardo', 2],
    ['Almeda, Frank & Pacifico, Ricardo & Martins, Angela B.', 1],
    ['Fontelas, Jean Correa & Romero, Rosana', 2],
    ['Gali, Lorena & Pacifico, Ricardo & Almeda, Frank', 2],
    ['Mendoza-Cifuentes, Humberto & Ariza, William', 1],
    ['Pacifico, Ricardo & Almeda, Frank', 7],
    ['Pacifico, Ricardo & Almeda, Frank & Gali, Lorena', 2],
    ['Pacifico, Ricardo & Almeda, Frank & Kriebel, Ricardo', 2],
    ['Pacifico, Ricardo & Almeda, Frank & Penneys, Darin S.', 11],
    ['Romero, Rosana', 1],
    ['Romero, Rosana & Valentim, Rodrigo', 2],
    ['Romero, Rosana & Versiane, Ana Flávia Alves', 15],
    ['Versiane, Ana Flávia Alves & Romero, Rosana', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);