function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benaim, Natalia Pereira & Absalao, Ricardo Silva', 3],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 4],
    ['Dall, William Healey', 1],
    ['Gofas, Serge & Luque, Ángel A. & Oliver, Joan Daniel', 2],
    ['Hryniewicz, Krzysztof & Amano, Kazutaka', 2],
    ['La Perna, R.', 3],
    ['Negri, Mauro Pietro & Corselli, Cesare', 4],
    ['Ortega, José Rafael & Gofas, Serge', 2],
    ['Smith, Edgar A.', 2],
    ['Suarez-Mozo, Nancy Yolimar & Gracia, Adriana', 1],
    ['Wiklund, Helena & Taylor, John D. & Dahlgren, Thomas G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    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);