function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Khazali, Azhar Mohammed & Kachel, Hamid Saeid', 1],
    ['Alberto T. Barrion & Aimee Lynn A. Barrion-Dupo', 1],
    ['Barrientos, Jose A. & Prieto, Carlos E. & Pina, Silvia', 1],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 2],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 1],
    ['Dean, David Allen', 6],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Keer, Johan Van & Bosmans, Robert', 5],
    ['Lucas, Pierre-Hippolyte', 1],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 1],
    ['Norma-Rashid, Y. & Li, Daiqin', 1],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 1],
    ['Rheims, Cristina A. & Barreiros, José Augusto P.', 2],
    ['Rheims, Cristina A. & Brescovit, Antonio D.', 39],
    ['Zamani, Alireza & Stockmann, Mark & Magalhaes, Ivan L. F.', 3],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=68)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);