function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ghahari, Hassan & Packova, Gabriela & Platia, Giuseppe', 1],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['Linnaeus, Carolus', 28],
    ['Mitter, Heinz', 1],
    ['Panzer, Georg Wolfgang Franz', 1],
    ['Platia, Giuseppe & Ghahari, Hassan', 1],
    ['Poda, Nicolaus', 1],
    ['Say, Thomas', 1],
    ['Schrank, Franz von Paula', 1],
    ['Schönherr, Carl Johan', 1],
    ['Weber, Friedrich', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    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);