function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Gerald R. Dr. & Erdmann, Mark V. & Brooks, William M.', 1],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Bogorodsky, Sergey V. & Suzuki, Toshiyuki & Mal, Ahmad O.', 3],
    ['Fujiwara, Kyoji & Psomadakis, Peter N. & Swe, Thet Yu Yu', 1],
    ['Garzón-Ferreira, J. & Acero P., Arturo', 1],
    ['Goren, Menachem & Baranes, Albert', 1],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 3],
    ['Van Hinsbergh, Victor W. M. & Helwerda, Renate A.', 1],
    ['Winterbottom, Richard', 1],
    ['Winterbottom, Richard & Burridge, M.', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);