function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alipanah, Helen & Asselbergs, Jan & Malm, Tobias', 21],
    ['Della Rocca, Francesca & Stefanelli, Silvia & Cardarelli, Elisa', 1],
    ['Garre, Manuel J. & Girdley, John & Guerrero, Juan J.', 8],
    ['Gumhalter, Danijela & Kučinić, Mladen & Šašić, Martina', 9],
    ['Hampson, G. F.', 1],
    ['Kemal, Muhabbet & Koçak, Ahmet Ömer', 1],
    ['Komal, J. & Shashank, P. R. & Sondhi, Sanjay & Madan, Sohail', 2],
    ['Landry, Bernard', 5],
    ['Mbata, Keith J. & Prins, Jurate De', 1],
    ['Poltavsky, Alexander N. & Kravchenko, Vasiliy D.', 1],
    ['Sinev, Sergey Yu. & Korb, Stanislav K.', 12],
    ['Singh, Navneet & Ranjan, Rahul & Talukdar, Avishek', 32],
    ['Swezey, O. H.', 3],
    ['Tsvetkov, Eugene', 2],
    ['Yepishin, Viktor & Khalaim, Yevhenii & Budashkin, Yuriy', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=100)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);