function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gkelis, Spyros & Ourailidis, Iordanis & Panou, Manthos', 110],
    ['Gupta, Pratibha', 1],
    ['Jarvis, Charlie', 4],
    ['Kaštovský, Jan & Gomez, Esther Berrendero & Hladil, Jindřich', 2],
    ['Luz, Ruben & Cordeiro, Rita & Fonseca, Amelia', 43],
    ['Mcgregor, Glenn B. & Sendall, Barbara C.', 1],
    ['Tsuda, Roy T.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=162)',
    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);