function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 2],
    ['Alston, Arthur Hugh Garfit', 1],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 3],
    ['Christ, Konrad Hermann Heinrich', 1],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 7],
    ['Christensen, Carl C.', 1],
    ['Copeland, Edwin Bingham', 3],
    ['Jarvis, Charlie', 2],
    ['Kaulfuss, Georg Friedrich', 1],
    ['Matos, Fernando B. & Bohn, Amabily & Labiak, Paulo H.', 1],
    ['Murdock, Andrew G. & Chen, Cheng-Wei & Huang, Yao-Moan', 5],
    ['Rosenstock, Eduard', 1],
    ['Shepherd, Lara D. & Murdock, Andrew G. & Amice, Rémy', 23],
    ['Wang, Ting & Xiao, Bo & Liu, En-De & Nguyen, Khang Sinh', 2],
    ['Wang, Ting & Yang, Tuo & Zhang, Jin-Guo & Zhang, Gui-Liang', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=55)',
    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);