function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Bukejs, Andris', 1],
    ['Casale, Achille & Grafitti, Giuseppe & Latella, Leonardo', 5],
    ['Connior, Matthew B. & Kovarik, Peter W. & Iii, Stephen Chordas', 1],
    ['Karns, Ken D.', 1],
    ['Latella, Leonardo', 5],
    ['Ledesma, Enrique & Jiménez-Valverde, Alberto', 2],
    ['Majka, Christopher & Langor, David', 10],
    ['Nitzu, Eugen', 17],
    ['Peck, Stewart B. & Gnaspini, Pedro & Newton, Alfred F.', 4],
    ['Peck, Stewart B. & Newton, Alfred F.', 1],
    ['Perreau, Michel', 1],
    ['Perreau, Michel & Ghahari, Hassan & Angelini, Fernando', 11],
    ['Růžička, Jan & Perreau, Michel', 3],
    ['Schilthuizen, Menno & Perreau, Michel & Njunjic, Iva', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=68)',
    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);