function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Butler, Arthur Gardiner', 1],
    ['Espeland, Marianne & Nakahara, Shinichi & Zacca, Thamara', 1],
    ['Hübner, Jacob', 2],
    ['Nakahara, Shinichi & Fratello, Steven A. & Harvey, Donald J.', 1],
    ['Nakahara, Shinichi & Kleckner, Kaylin & Barbosa, Eduardo P.', 1],
    ['Nakahara, Shinichi & Le Crom, Jean Franҫois & Lamas, Gerardo', 1],
    ['Nakahara, Shinichi & Llorente-Bousquets, Jorge', 2],
    ['Nakahara, Shinichi & Rodríguez-Melgarejo, Maryzender', 2],
    ['Nakahara, Shinichi & Vega, German & Willmott, Keith R.', 1],
    ['Neild, Andrew F. E. & Nakahara, Shinichi & Zacca, Thamara', 2],
    ['Pulido-B, Hannier W. & Andrade-C, Gonzalo & Peña, Carlos', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    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);