function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brandt, Angelika & Bruce, Niel', 2],
    ['Cai, Yixiong & Teo, Serena L. M.', 1],
    ['Cházaro-Olvera, Sergio & Winfield, Ignacio & Ortiz, Manuel', 2],
    ['Fabricius, Johann Christian', 1],
    ['Kim, Sung Hoon & Jung, Tae Won & Yoon, Seong Myeong', 6],
    ['Leach, William Elford', 1],
    ['Liu, Wenliang & Liang, Xiaoli & Zhu, Xiaojing', 1],
    ['Mead, A. & Carlton, J. T. & Griffiths, C. L. & Rius, M.', 1],
    ['Poore, Gary C. B. & Hurley, Desmond E.', 3],
    ['Pugh, P. J. A. & Dartnall, H. J. G. & McInnes, S. J.', 1],
    ['Santos, Antonio Murias dos & Xavier, Raquel & Zenboudji, Saliha', 2],
    ['Song, Ji-Hun & Min, Gi-Sik', 1],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    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);