function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angulo, Arturo', 1],
    ['Ayres, W. O.', 1],
    ['Borodin, N. A.', 1],
    ['Béarez, P.', 1],
    ['Castro-Aguirre, J. L. & Arvizu-Martinez, J.', 1],
    ['Ceríaco, Luis M. P. & Santos, Bruna S. & Semedo, Thiago B. F.', 3],
    ['Jordan, David Starr & Gilbert, Charles H.', 2],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 6],
    ['Randall, John Ernest Dr. & Cervigón, Fernando', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    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);