function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aistleitner, E.', 1],
    ['Aistleitner, Eyjolf', 1],
    ['Bonelli, Simona & Barbero, Francesca & Casacci, Luca Pietro', 1],
    ['Cock, Matthew J. W. & Robbins, Robert K.', 1],
    ['Krupitsky, A. V. & Shapoval, N. A. & Shapoval, G. N.', 1],
    ['Krupitsky, Anatoliy & Yakovlev, Roman', 1],
    ['Krupitsky, Anatoly V. & Kolesnichenko, Kirill A.', 1],
    ['Krupitsky, Anatoly V. & Pljushtch, Igor G. & Pak, Oleg V.', 1],
    ['Munguira, Miguel L. & Martín, José & García-Barros, Enrique', 1],
    ['Stradomsky, Boris', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);