function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, J. A.', 35],
    ['Galvez H., O. & Wacquez, M.', 1],
    ['Ivanova, Mariya B. & Tsurpalo, Alexandra P.', 1],
    ['Negri, Mauro Pietro & Corselli, Cesare', 1],
    ['Oliveira, Cléo Dilnei De Castro & Absalão, Ricardo Silva', 6],
    ['Oliver, P. Graham & Holmes, Anna', 1],
    ['Oliver, P. Graham & Holmes, Anna & Killeen, Ian & Light, Janice', 1],
    ['Ortega, José Rafael & Gofas, Serge', 3],
    ['Smith, Edgar A.', 3],
    ['Suarez-Mozo, Nancy Yolimar & Gracia, Adriana', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);