function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 10],
    ['Bhandari, Prabin & Chaudhary, Satyam & Neupane, Ajay', 1],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 1],
    ['Clarke, Charles Baron', 1],
    ['Danylyk, Ivan M. & Koopman, Jacob', 2],
    ['Hinchliff, Cody E. & Petersen, Stephanie & Roalson, Eric H.', 1],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 8],
    ['Info Flora', 11],
    ['Jarvis, Charlie', 5],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 10],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 3],
    ['Oliveira, Adriana & Bove, Claudia', 22],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 2],
    ['Silva, Caio Lima Braga da & Nunes, Clebiana de Sá', 5],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 10],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=98)',
    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);