function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 5],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 2],
    ['Dean, David Allen', 1],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 4],
    ['Fomichev, Alexander A.', 1],
    ['Isaia, Marco & Paschetta, Mauro & Chiarle, Alberto', 2],
    ['Marusik, Yu. M. & Larsen, N.', 8],
    ['Milano, Filippo & Mammola, Stefano & Rollard, Christine', 1],
    ['Oezkuetuek, Recep Sulhi & Marusik, Yuri M. & Kunt, Kadir Bogac', 3],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 2],
    ['Trilikauskas, L. A.', 1],
    ['Zamani, Alireza & Darvishnia, Hamid & Marusik, Yuri M.', 1],
    ['Álvarez-Padilla, Fernando & Hormiga, Gustavo', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);