function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Falniowski, Andrzej & Lewarne, Brian & Rysiewska, Aleksandra', 1],
    ['Frank, Christa', 1],
    ['Ituarte, Cristián & Korniushin, Alexei Victor', 4],
    ['Marković, Vanja & Gojšina, Vukašin & Novaković, Boris', 3],
    ['Neubauer, Thomas A. & Mandic, Oleg & Harzhauser, Mathias', 1],
    ['Rassam, Hanane & Ghamizi, Mohamed & Benaissa, Hassan', 5],
    ['Schultheiss, Roland & Ndeo, Oscar Wembo & Malikwisha, Meni', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);