function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bittrich, Volker & Cabral, Fernanda Nunes', 1],
    ['Horsfield, David', 2],
    ['Jarvis, Charlie', 2],
    ['Kazerani, F. & Beuk, P. & Farashiani, M. E.', 3],
    ['Linnaeus, Carolus', 2],
    ['Luján, Manuel & Cacho, N. Ivalú & Pérez-Farrera, Miguel Ángel', 1],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 1],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 12],
    ['Owen Lonsdale', 1],
    ['Sasakawa, Mitsuhiro', 2],
    ['Shen, Shuang & Zhu, Yongqiang & Liu, Chang & Yang, Ding', 3],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    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);