function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahl, E.', 1],
    ['Angulo, Arturo', 1],
    ['Angulo, Arturo & Betts, Joel T. & González-Alemán, Néstor J.', 1],
    ['Aqmal-Naser, Mohamad & Ali, Norsyafira Anis', 1],
    ['Girard, Charles Frédéric', 2],
    ['Hubbs, Carl L.', 5],
    ['Hubbs, Clark & Springer, Victor G.', 2],
    ['Lucinda, Paulo Henrique Franco & Reis, Roberto E.', 2],
    ['Meek, S. E.', 4],
    ['Meek, S. E. & Hildebrand, S. F.', 4],
    ['Minckley, W. L.', 2],
    ['Regan, C. T.', 8],
    ['Rivas, L. R.', 4],
    ['Saad, Adib & Çiçek, Erdoğan & Esmaeili, Hamid Reza', 2],
    ['Çiçek, Erdoğan & Fricke, Ronald & Eagderi, Soheil', 2],
    ['Other (24)', 24]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=65)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);