function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Artüz, M. Levent & Fricke, Ronald', 1],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 5],
    ['Iwamoto, Tomio & Ho, Hsuan-Ching & Shao, Kwang-Tsao', 2],
    ['Lin, Chien-Hsiang & Brzobohatý, Rostislav & Nolf, Dirk', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 1],
    ['Melo, Marcelo R. S. & Braga, Adriana C. & Nunan, Gustavo W. A.', 4],
    ['Nakayama, Naohide', 26],
    ['Prokofiev, Artem M. & Iwamoto, Tomio', 6],
    ['Prokofiev, Artem M. & Iwamoto, Tomio & Mishin, Alexey V.', 2],
    ['Schwarzhans, Werner & Mors, Thomas & Engelbrecht, Andrea', 3],
    ['Van Hinsbergh, Victor W. M. & Helwerda, Renate A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);