function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bosser, Jean', 14],
    ['Dang, Minh Quan & Averyanov, Leonid V. & Dang, Van Son', 13],
    ['Kranzlin, F.', 5],
    ['Nguyen, Van Canh & Averyanov, Leonid V. & Maisak, Tatiana V.', 5],
    ['Ormerod, Paul & Kurzweil, Hubert & Watthana, Santi', 79],
    ['Ormerod, Paul Abel', 4],
    ['Ridley, Henry Nicholas', 15],
    ['Royen, Pieter van', 6],
    ['Schlechter, Fridrich Richard Rudolf', 34],
    ['Schuiteman, A. & de Vogel, Eduard Ferdinand', 4],
    ['Smith, Johannes Jacobus', 94],
    ['Vermeulen, Jaap J.', 78],
    ['Vermeulen, Jaap J. & O\'Byrne, Peter', 5],
    ['Vermeulen, Jaap J. & Schuiteman, André & De Vogel, Edward F.', 17],
    ['Vermeulen, Jaap J. & de Vogel, Eduard Ferdinand', 6],
    ['Other (41)', 62]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=441)',
    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);