function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Ben-Tuvia, Adam', 2],
    ['Ho, Hsuan-Ching & Smith, David G. & Mccosker, John E.', 3],
    ['Ho, Hsuan-Ching & Smith, David G. & Tighe, Kenneth A.', 6],
    ['Huang, Jian-Fu & Ho, Hsuan-Ching & Chang, Yung-Hsu', 3],
    ['Huang, Jian-Fu & Ho, Hsuan-Ching & Chen, Hong-Ming', 1],
    ['Karmovskaya, Emma S. & Smith, David G.', 4],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 2],
    ['Marcia Salustiano de Castro & Ana Cristina Teixeira Bonecker', 2],
    ['Melo, Marcelo R. S. & Nunan, Gustavo W. A. & Braga, Adriana C.', 2],
    ['Smith, David G. & Ho, Hsuan-Ching', 10],
    ['Smith, David G. & Karmovskaya, Emma S.', 1],
    ['Van Hinsbergh, Victor W. M. & Helwerda, Renate A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);